So I own a ‘91 80 series and I’ve been planning on doing an engine swap for a while now which means I’ll have a spare 3fe sitting around, and recently one of my buddies got a ‘74 40 series and I pitched him the idea of a 3fe swap and as of right now I’m just curious if the 80 series version of the 3fe will bolt up to the tranny he has. I’ve read around that the 3fe out of a 62 series will but I honestly have no idea what the difference between a 62 and 80 motor is.