Bob, the super turbos probably sound good to you, but you won't like them when you see how much they hurt the power. My dad had Dynomax Ultra Flows on his road runner and thought they were too loud. So he got a pair of Super Turbos and liked the sound, but the power loss was very noticeable. So much so that he decided to change mufflers again...this time to a pair of Hooker Aero Chambers. Feels like it got all the power back and sounds really good. Louder than the super turbos, but not nearly as loud as the Ultra Flows.

His car has a 440 (+.040") w/ mildly worked 906s, 509/292 cam, and a 6 pack setup. 4 speed w/ 3.54 geared Dana. Has Hooker 1 7/8" headers and full 3" exhaust (no crossover) w/ tailpipes. Same motor w/ an automatic ran 11.80s in my cuda.