Ummm this can’t be good
I had a '52 Imperial I wanted to put a 3-71 or 4-71 blower on but never happened.
The Marine Hemis had adjustable rockers. I knew a guy who paid almost 2 grand for my friend's 2 marine Hemis and that's all he took, he left the rest!
Chrysler was getting 180 Horsepower out the 331 Hemi and Cadillac was only getting 160 out of their 331!