Changing from a 4cyl. to a V8 requires V8 motor mounts, the bottom half, from a 75 to 78 that bolt to the subframe while the top half of the V8 motor mounts bolt to the engine. That is what I did to get my Cleveland in, this will allow the following V8s to be bolted in 289-302-351W-351C. The 4 cyl transmission housing will not bolt to the V8 block so a different
tranny will be needed, I found that even though the 4cyl
trans will unbolt from the bellhousing it is to light duty to be of any good. Stick with a C4 transmission as clearence is very tight in the tunnel where the
trans will fit upon installation. C4s can be beefed up to withstand a lot of abuse. I never tried a AOD
trans or a 5sp stand-
ard
tranny since the car came with an automatic. I did not have to change the
trans. mount or frame cross member although the double hump style helps in the exhaust installation later.