Let’s talk about 850 exhausts. There are a lot of forum threads out there debating the merits of different exhausts, mostly coming down to the inexpensive OBX stainless exhaust (typically $350-450) vs. the more expensive IPD stainless exhaust. During IPD’s annual sales, you can get that exhaust for 15% off, or about $846, but normal retail is $995. Why compare these two? Because they are extremely similar looking… at least, on the surface.