Selling my RSR-style muffler from my '75 IROC race car. I built this muffler for our 3.5 twin plug race motor. Built to fit George's 1-5/8" headers. The muffler consists of George's straight pipes and M&K hollow muffler. Power band from 4500 RPM to 7200 RPM. 92 db at Infineon Raceway. $300. Local pickup in Santa Fe NM.
