sorry 1 more question

i have a 97 gst and wondering about headers or downpipe and if i got a down pipe would i have to get any thing else to bolt it up or would it fit to my stock exhaust and would it make my car louder? thanks

by headers you mean exhaust manifold, the part that goes from your engine to your turbo and in order for it to make a difference in sound and HP you should probably get a 3" catback along with 3" downpipe, everything is bolt on, just search around

Get the dp with the catback, three inch, bolt it on all at once. It'll all fit/work. For more info, search back within the past week.

It'll make your car louder, yay :)

by headers you mean exhaust manifold, the part that goes from your engine to your turbo and in order for it to make a difference in sound and HP you should probably get a 3" catback along with 3" downpipe, everything is bolt on, just search around

For the record it's "header" not "headers", and yes the stock portion is a exhaust manifold, but an upgrade version is a header. Anyways, like sganc4life_4 said, everything is a bolt on.