what headers do you have now? any aftermarket performance header should be fine, being way better than stock, if you dare call those things headers. aftermarket heads are deffinitely a no concern way to go , aluminums remove weight, give great performance, go well with upgrades. stockers can flow real decently "if" ported properly, and especially if bigger valves are installed. however , yes you can make a real mess of them if you do not know what you are doing and actually hurt flow, or worse, make a hole in them by going to far.cnc ported heads are a reliable way to go for economy power, they will flow pretty good and the power will be very noticeable. if you want the best junkyard stockers for your money, try to get your hands on a pair of heads off one of those explorers with a 302 from (i think)1996. fords best stock work yet.as for porting the intakes, if you dont understand porting to do it yourself, just buy an aftermarket, youll be so much better off.the stock upper has to be cut in half to be really ported properly, do you weld aluminum? all in all , if you dont read alot about porting or someone show you , or understand the ins and outs of it, and have a bunch of tools for it your are better off with aftermarket. for you other guys who say port them yourself, i too do that, but we understand how, think of the consequences of not doing it right.
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