the headers i got are 4-2-1, to be honest im not 100% sure about top end vs low end perfomance gains losses i have seen, they are minimal either way i guess
i got a high flow cat off ebay, with bolts, gaskets, correct dimensions for $40, it seems to help a lil but since i put that and headers on i get an annoing rattle/whistle at mid range rpms sometimes, i ran it for a day with no O2 i hope the rattle isnt cause i burned it out doing that or something like that
thanks for the advice and knowledge