Bends in the pipe make VERY little difference. Just look at the bends in an F1 manifold.
Either way, 7' from the engine its pretty hard to do much to reduce performance, apart from maybe sticking a potato in the end. Only the front few feet of pipe actually make a difference.
Cheers smee, i'll show them that pic and see what they can do, i'm hoping for a double circular exhaust maybe 4" each coming out of the middle, will look wierd without a body kit for now but will hav to do
u will have to fit a new exhaust when u fit ur kit. as 1) i DONT know of a kit with a 4" hole and 2) it is secure on very well. i dont see them changing it for free either