Larry Johnson makes frequent visits up to the display case on the 200-level of the renovated Garden to reminisce.

The glass-enclosed shrine includes photos, a copy of the boxscore and the shoes and “2’’ jersey he wore the wild night of June 5, 1999.

It is glorified among the “21 Defining Moments” in the history of the old Garden — along with political conventions, historic boxing matches, rock concerts and the Rangers.

“Up there all the time,’’ Johnson told The Post this week. “It’s still the basketball mecca. John [Starks] and I are living off it. We got a dunk [against Michael Jordan] and a four-point play. We’re in there.’’

Wednesday is the 20th anniversary of Johnson’s game-winning, four-point play in Game 3 of the 1999 Eastern Conference Finals.

Johnson rose from the left wing behind the 3-point line as Pacers forward Antonio Davis rose with him. The Knicks were down three points. When the sequence was over, they were up 92-91.

Johnson said rarely a day goes by without a New York fan coming up to kibbitz about the four historic points that crushed the Pacers’ and eventually helped send the eighth-seeded Knicks onto the NBA Finals.

“Back then, the team was better, going to the playoffs,’’ Johnson said. “I get it and I love it. There’s been probably about 1.6 million people who come up to me and told me they were at the Garden that night. I ask for a ticket stub now.”

Charlie Ward looked to inbound with 11.9 seconds left. With Patrick Ewing injured, the play was designed for Allan Houston, who had captured the decisive Game 5 of the first round against Miami with a runner off the rim and backboard.

The Pacers’ Jalen Rose deflected the pass, Johnson caught it, took several jab steps, then one dribble, flung it and made it with 5.7 second remaining.

Referee Jess Kersey’s whistle blew, signaling a foul on Davis, who still got animated discussing the sequence this week.

What unfolded is a “he-said, he-said” on whether Kersey blew the call.

Mark Jackson and Jeff Van Gundy, calling this year’s NBA Finals for ABC/ESPN, were both on the floor — Jackson as the Pacers point guard, Van Gundy as the Knicks coach.

Jackson, who has questioned the foul call to confidants, declined to comment for this story.

“Ask Jeff,’’ Jackson said.

“It sends chills down my spine every time I see it,’’ Van Gundy said. “Changed a series.’’

Some have said the Garden never sounded louder than when the ball flushed through and the whistle blew. An iconic video clip taken from atop the Garden shows the fans rising as one as Johnson’s shot went through to knot the score with a free throw pending.

“It’s the loudest I’ve heard it,’’ said Johnson, who now works for the team in alumni relations. “I’m not just saying that. I’ve been on the bench. I’ve been in-game. You can be totally focused on the game and all of a sudden at the Garden, you’ll snap and go, ‘Whoa!’ It’s super loud and you can’t help but take a second to admire what’s going on. After I made the free throw, Spike Lee hugged me and that’s when I was like, ‘This is incredible.’ ”

When he got home that night, Johnson saw the replay of everyone leaping at once — a scene during which Houston said, “The Garden literally lifted off the ground.’’

“That’s my favorite [replay] shot,’’ Johnson said. “I love that shot.’’

After the bucket, Johnson enacted his trademark “L’’ sign he did after every 3. Reserve Rick Brunson invented the gesture that lockout season during practice and started doing it on the sidelines.

“I took it over,’’ Johnson said. “He would do it after I hit a 3 and I’d look over at the bench doing the big L.’’

Davis will credit Johnson for making the shot, but can’t fathom the foul call. Johnson’s free throw put the Knicks ahead and gave them a 2-1 lead in the best-of-seven series.

“One thing I’ll say is LJ wasn’t a 3-point shooter like that,’’ Davis told The Post. “I knew we were up 3, trying not to foul. Just wanted to be solid, stay down, solid with all my defensive principles.”

When Johnson grabbed the deflection, he sized up Davis, pump-faked, took a dribble to the left. Davis appeared to make contact. Then they rose together.

Davis said he would defend the LJ the same way.

“I’ve seen it several times,’’ Davis said. “I’m not in agreement it was an and-one. When I keep running it back in my head, I was in good position. My hand was straight up and down. Whether there was contact on his arm — if my hand is straight up, then his hand follows through and hits mine — is it a foul? If we were in the same position, would I change anything other than the outcome? No. I’d change nothing. My hand was straight up and down. I didn’t go for no fakes. I was solid.’’

Click Here: cheap kanken backpack

Johnson cites rule changes that season in saying it was the right call. He has debated both Davis and Jackson about the controversy.

“I couldn’t believe people were saying it wasn’t a foul,’’ LJ said. “Mark and I spoke about it. He didn’t think it was a foul. Beginning of that season was when they were going with keeping your hands off, the touching. They called it the Derek Harper Rule. The first 20 games, I was on the bench with two [quick] fouls. It’s a rule I hated. We get to The Finals, I make a move and he puts his hand on my hip, pushes me back a little and the foul is called. That type of foul bit me in the [butt] all season. That’s a foul.’’

see also

Jeff Van Gundy and Mark Jacksons ESPN reign has no end in sight

If only NBA executives felt as strongly about Jeff Van…

Johnson still had to make a free throw. As LJ celebrated the 3-pointer, Chris Childs grabbed him and Johnson pushed him away.

“Chris was keeping me calm, he was trying to grab me,’’ Johnson said. “I heard the whistle, but I went back running trying to get back on defense. Chris that stopped me. ‘Whoa, where you going? You got a free throw.’ ”The free throw — and history — was made. In the aftermath, Johnson blessed sideline reporter Jim Gray in Arabic.

“I was more hurt for my teammates, guys like Reggie Miller, Mark, not being in the Finals, not getting past that moment,’’ Davis said. “That sticks with you.’’

It has stuck with Knicks fans for the last 20 years.

“The shot resonates on so many levels,’’ Knicks historian Dennis D’Agostino said. “First thing is the roar. A roar never heard at the Garden before or since.’’