I really wanted to keep the sidepipes that I've had on the car for almost 10 years. I did a ton of research on O2 sensor placement but came to the conclusion that my Hooker style headers weren't going to work. So, I did the next best (and loudest) thing and got the chambered exhaust system from Mid-America. It's a 2.5" system that was designed to be used with headers. I used the "headers" version since I would be using '99 Z28 manifolds and would have to adapt them with some exhaust tubing and weld everything in. I also wanted the option of running open exhaust for maximum power (and that bad-ass sound) so I got a pair of exhaust dumps and welded them in just in front of the transmission crossmember. We modified the manifolds to remove the AIR and EGR ports. The AIR port hit the right upper A-arm so it was cut off, ground down, and the hole was welded shut. The left EGR port was not sealing well, so it was cut off and welded shut as well. I had to use the '73 exhaust tips, as the '70 cars came with a 2.25" system and so the 2.5" pipe wasn't going to fit in them.

As it sits right now, the exhaust system isn't optimal, but it works. Ultimately I'd like to get some longtube headers and do a 3" system with some slightly quieter mufflers. The chambered system sounds awesome but it can get annoying after a while. I'm told that a balance pipe will help this out, so it's on the list of things to do.

	"Customized" 1999 Z28 exhaust manifolds
	Bosch oxygen sensors (new)
	Mid-America 2.5" chambered exhaust system for 1970 Corvette
	Random Tech 2.5" exhaust cutouts
	1973 Corvette stainless steel exhaust tips and bezels