I have a rebuilt 440, stock rebuild (1970 block with stock 906 heads) 30 over flat top pistons no valve reliefs. Factory HP cam, stock valvetrain. Looking for suggestions on intake and carb recommendations, car will not be raced but also wont be an everyday driver. will be putting headers on and it is an automatic. Just looking for an improvement over the the stock intake and carburator. this is being installed in a 71 duster.