After 2 years, i still have a 343 laying around and the body seems to be in ok shape, i want to know how doable would it be to go from a 1.4 cvt to b200f redblock manual, since i would probably feel bad about scrapping that volvo since there are 0 of them on the road as of today, and i have a 360 donor car laying around anyway.

If your donor 360 is a late 360 with B200F, then this option isn’t possible unless you find B14 parts.