Currently I'm running Bassett twisties on my sbc 377 spinning it 5500. I run the headers dry since my cam is 106 lsa. I know the Bassett were designed with running wet taking into consideration the expansion of water into vapor . I assume the primaries on the headers are too big when running dry. I also assume this is hurting power? I was tossing the idea of having custom headers built considering, I will run them dry, any suggestions on primary size?