I've owned two vehicles with Thrush mufflers. Both were owned in the 70s. I had a '68 CST with a 396 that had thrush mufflers in a relatively stock 2" exhaust system - no headers. Then, I had a pair of their header mufflers [bolted directly to the collectors] behind a nasty smallblock in a '57 150. That was 1976. I agree - great sound!! I uncorked the headers when racing the '57, so capacity/flow was not an issue. The CST was my tow rig, so I just liked the sound!
