Agree on this. Nobody will buy a restored 383 roadrunner without at least a fender tag in the mopar world. A 6.4 hemi, 5-speed swap with a/c will bring back about double your investment at sale time. Figure about 15 grand to do it If you ever have you sell it you will have 10 times the buyers, and you will love driving it anywhere. It also makes a car way more wife friendly if you have, or plan to have that issue. Finding a 383, trans, rebuilding it, and all the original parts for a resto will be at least half that.