Hemi Swapping a perfectly good 70 Duster

Dantra said
Agreed.. 5.7s are great little motors. I put a 6.4 non mds cam and lifters cam in hoopty with a hellcat oil pump. It's a great no tune option

You are running the cam without a tune? I've seen good numbers with that cam but it was after a tune.

Best part is the price, at one point they were less $100 for a 6.4 M6 cam. I think mine was $212 a year or more ago.