I am parting a 97 venture and had to do the same thing the other night!
one of the bolts broke off on the exhaust mani and it woundnt come off.....the engine bay opening on those couches is TINY!
we are spoiled with superjets..I mean you can drop a 701 motor in with carbs, headpipe, hell...ive done it before with the chamber still attached..
to get the motors out of these things you really have to disassemble 90% of the ski!!!