New to Mopar

I've been the car world for a time now. I currently have a couple of 50s lead sleds however I just bought a 66 barracuda. I've been wanting to build a ground pounder and I think this is it. Not too many around and in the condition I'm getting it it will take very little to rod. It has the original 273 non commando and I'm torn between building it and just dropping in a 383 or the likes. I would appreciate any advice good or bad. I'm a Hamber and have very good luck there. I hope FABO is as helpful and fun as the Hamb is.

Skullz