Engine swap questions

[TechX]

I have a '82 Olds 98 great condition all brake components new interior excellent. Unfortunantly the engine is starting to rod knock and is on its last leg. I have a SB chevy engine and 350 (short/long tail) and 400 tranny. I know the BOP tranny won't bolt up. I would like to know what else will not match up. Yoke? Motor mounts? Tranny mount? Accy's bolted on to original engine will not fit? Thank you in advance.

[ebu187]

need different motor mounts i think, driveshaft most likely a 350 trans will fit the crossmember for sure the 400 you might have to move a bit