Diff. between RB headers
 

On ebay there's a RB road racing header for sale, with the double outlet, they sell new from RB for $134, and the single outlet streetable header sells for $168, what sort of differences are there really? I'm in MS so no emissions laws :)

If i were to go with the road race header, would it be more expensive to get a straight pipe exhuast because of the dual pipes? Or could I save money overall just getting the streetable header and a single pipe?

The road race header is so that you can build a tuned length for racing. Depending on what port you have, what kind of racing you will be doing, you would collect the duals into one at X" from the motor to the crotch of the Y. Generally for a road race car, high rpms, you would actually collect at 24" which means the RB header is really too long. So that said, for steet/autocrossing/dragracing/some track time, I would go with the road race header and collect at.......I think it is like 114"??? This is an all around good length.

The street header is just for what it says it is. It is an all around good length for racing and street use. You will get a good amount of torque on the street and a decent amount of top end for racing.

I guess I should have specified :D It will be street driven/autocrossing. I think i'm going to go with the street header, I would probably see more low end power eh?

Yep!