I guess I got lucky, I put my Hemi in a 70 Barracuda that was an original 318 A/C car with no issues. I used Schumacher conversion mounts and TTI 2-1/8 headers that went in with no mods even with power steering. The only complaint I have is that I can't use my MP cast aluminum V/C's because of the pass side shock tower clearance. I wonder if an8sec70cuda could get a closer picture of the mods to the shock tower as my engine is out right now and I would like a better view of just how much to work it over.