TOKYO — "I'll give you until noon tomorrow to get out of town!" Muhammad Ali stormed at Mac Foster Friday. "And you better be on a fast horse!"

It was the final shouting match before the showdown — Saturday's 15-round match between Ali and Foster at the Budokan (Hall of Martial Arts), which Ali has confidently predicted he will end by a knockout in the fifth round. The two got together for the countdown phase, the weigh-in, at Korakuen Hall in downtown Tokyo. The fight starts at noon or shortly after.

Foster came in first, wearing a black suit and matching Texas hat, looking like the undertaker in a Western movie. Ali ambled in a few minutes later, wearing a red Hawaiian shirt and powder blue slacks.

Foster stepped on the scales first and scaled 211¾ pounds. Ali followed and weighed in at 226 — and of course could not resist using the scales as a stage.

"Round five!" he trumpeted repeatedly. "Five!" He spread his fingers into Foster's face, curled his lip in a sneer and thrust a few playful pokes at his massive opponent. Foster shrugged and turned away, his face registering something between amusement and disgust. The two stepped behind a partition to dress and went at it again.

'You are in trouble," Ali told him. "Real trouble."

Foster replied by saying he had once knocked out Sonny Liston (whom Ali stopped for the title in 1964) in a sparring match. "You don't believe me, just ask him!"

"Ask him?" Ali spluttered, for once at a loss for words. Liston died Dec. 30, 1970.

"I'll go down and ask him," Angelo Dundee, Ali's trainer, said. Ali jumped to his feet and thrust a jab over Dundee's shoulder.

"Let me show him my jab, the speed of my jab."

Ralph Gambina, Foster's bespectacled, pixyish trainer, grabbed the white sash of Foster's black robe and held it up as a barrier, inferring it could stop anything the former heavyweight champion threw.

"You found someone to put neon signs on the bottom of your soles?" Gambina asked. "You could make some money tomorrow."

Dundee tried to calm his fighter but Ali, apparently believing that it's never too late to make noise and sell tickets, raged on.

"Round five! Five!"

"You ever hear of what I did to Pepi Ros?" Foster asked. Ali knew full well; Foster knocked out the former Italian champion in Zurich last Dec. 26, with Ali flattening Jurgen Blin on the same card in seven rounds.

"Who's he? Nobody. That's all you ever fought, nobody."

Ali made it plain he thought Foster was being disrespectful in the presence of his better.

"Runnin' around here dressin' and talkin' like Doc Holliday. You wait til tomorrow ...

"Hey, bubba," Foster retorted. "You ever hear of Doc Holliday? He was bad. I'm gonna show you how the west was won."

"We're talkin' and jivin' now," Ali said. "But tomorrow it's gonna be real." He thrust his get out-of-town ultimatum at Foster, who laughed it off and asked Ali if he has made a down payment on a house. Ali has said he will not return home if he loses.

"Round five!" Ali repeated as he left. "Five!"

Japan Boxing Commission officials officiated at the weigh-in. Bill Brennan, president of the World Boxing Association, sat in, along with Lope Sarreal, who managed former world junior lightweight champion Flash Elorde.

The fight will be locally telecast on Channel 12 and beamed by satellite to the United States and Canada. Viewers all over the world will see it on delayed telecasts.