get Downpipe/plog: if you are low budget like me. If you are going to buy headers, you might as well buy the best damn set there is so you don't get any leaks- like the zzp stainless headers... Have heard to many horror stories about pacesetter leaks and incorrect alignments... just my theory though And if you want the zzp stainless headers and plan on getting a cat'd downpipe, that's around $900... So in my opinion, I will take my $140 random tech SS downpipe (bought used), and buy a $180 SS plog and maybe a $60 crossover or ($360 combined w/ plog) rear mani's and and call it a day. haha. that's just my opinion though... however I'm sure the headers do give you way better gains...