I believe he's got a 904 on the 360- but that could be a lockup? trans and depending if it's a 999 or a 32RH it could introduce additional wiring mods to accommodate the tow/haul switch, and clearance grinding on the tailshaft reinforcement ribs if a 32RH. But there's another story... :)
Can 'O Worms.
Best/easiest/cheapest would be to just warm up the slant and have some fun, instead of taking the chance of turning it into a garage ornament.