I have a one-ball exhaust up for sale. The exhaust uses 2.5" mandrel-bent pipe and SS welded. The sound is very nice for sporty feel. The exaust is from a 03 Cooper S with 50K miles on it. Everything is in good condition with little or no rust. Located in Detroit area.

 

For local pick up in Detroit area or for shipping, I'll just ship the cat-back with the stainless mandrel-bent pipe and you can weld it to your original mid-pipe for $20 in any local muffler shop when you bolt it on.