I would like to replace the stock muffler and cat converter on my 1987-930 with a high flow aftermarket unit. Does anyone out there have a used, single outlet, direct bolt on muffler in good shape they would like to sell? Please reply direct, with particulars, to blake.f.woith@delphiauto.com or call 949-660-5912. I live in the Southern California area and can arrange shipping for the right unit. Thanks for the help, Blake.