Easier to do when your car is cut to shreds... I'm still going into the firewall another couple inches. Will wait to determine how far until I have my mock-up vintage air unit. With the Gen 1/2 engine, expect the oil pan to cause problems, the Gen 3/4 motors can use the SRT truck pan which is a...
Never heard of it in an early A, but I would expect everything you mentioned would have to be modified: firewall, radiator, trans tunnel, mounts, possibly core support as well. It's a long mutha'...