who sells 3" stainless exhaust?

Summit used to sell a Pypes 3" stainless system for a-bodies. Not sure if they still do but it's worth a look. I bought their 2-1/2" kit for my car about 3 yrs. ago. Had to do quite a bit of work to get it to fit right but from what I've read they fit Dart's good, which if I remember right is what you have. Mine has a nice deep rumble.