The pressure bending will make a difference. You wont get as much horse power out of a pressure bent exhaust, but You most likely wont be able to feel the difference. (Were talking a difference of maybe 1-2 HP)

But for the money, pressure bent is extremely good.

Also, It would be good for you to get 2.5" piping and not 2.25". That will deffinately be better in terms of performance.

 

Well, I took your advice and went with the 2.5" pipe. It looks great and sounds even better. I got the alumized steel muffler, not the mirror finish because its a lot cheaper and no one can really even see our mufflers. I got a 3-1/2" polished stainless tip which awesome. I am very impressed with my exhaust and would recommend it to anyone. I got it all for $292.