I really appreciate everyone's input on this I have a lot of questions lol. I'm pretty familiar with OHV engines and how to make them work but an L8 flathead is definitely uncharted territory. I'll keep an eye out of a centrifugal supercharger, so if anyone has one that can push 7ish psi of boost and could be turned up from there with the RPM range I'm looking at let me know. From what I understand with large stroke engines that produce a lot of torque (in perspective) don't really need to rev so a 4000 RPM limit shouldn't be a problem, though transmission selection will be fun. The car has an ultramatic 2 speed (if you can really call it that) I have a couple T-5s but I don't know if they can handle the torque and heavy car combo (they are out of Fox Mustangs) I would like to go manual trans and with this engine I'm thinking an OD would be a good thing.