any body no of a exshust that is made for a cosworth that is a 4 " all the as a m8 had a 3 door cossy and that sounded the bollocks but he sold he car about 3 years a go but loved the way his car sounded was told by some bloke that i spoke to that its a old scopion as the back box was a 4 " but ther was no edges as in rolled out it was just cut clean and was thin if you cliped it on a curb you woul have bent it just woundering if any one nose were i could get one form or no of some 1 that hase on thanks

 

Tubetorque will do a 4"er but they don't do it "off the shelf", you will need to go in & get it custom made, there are no "off the shelf" 4" systems available.

www.tubetorque.co.uk