It sounds to me like you don't have an actual goal here, which makes it difficult to help
you. Why would you want a header?, um because it's proven to be the best first step
in improving power,torque, & efficiency time& time again. BUT headers come w/some hassles you may or may not want to deal with.Dutra duals are a great 2nd choice but give
up some of the great torque the header offers for more reliable sealing etc. supersix int.
manifolds are still falling out of peoples rafters & are for sale elsewhere on this site, get
one! you ain't gettin no beef w/o more air&fuel! Ditto 2bbl. carter& holley carbs but you
need to re-jet, just curious, your new to working on cars in general or....?