I'm not quite sure what you meant by 420/430. I know my heads are holding me back. I'm leaving the upgrade and bigger cam and rockers for next year and another 3 grand push at the motor.which if I get those heads and stuff like that will make me start to have to do other things like roll cage and stuff that just cost more and more money. I think the single carburetor manifold would probably be better and faster and more power but I like to keep my car which is my hobby and my fun like me - old school and cool DUAL QUAD TUNNEL RAM !! :headbang: lol
I have a LD4B but I'm saving it to go on the 318 when I get the new heads and stuff. I'll put this (old?) stuff on it