I am looking for a good muffler shop here in denver co to convert my 71 mach 1 from single to dual pipes. I have a stock manifold. Thanks for any info.
You might try Gene Noble Radiator and Muffler in Castle Rock. I have know them since 1984, and they have a great rep. Gene's son is running the show now. They will be doing my exhaust soon. I can get you the phone number if you need it.