I've heard the macs sound a little less hollow than the flowmaster 40's, but still pretty loud. I just took my tailpipes off tonight and put on a set of dumps, it sounds deeper at lower rpms and a little louder when it's winding up. I'd like to get some flowmasters 40's, I just haven't had the money.
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86 Mustang GT w/pretty stock 93 5.0 (cam,pulleys,injectors, throttlebody,h-pipe)
Motor to be swapped for a 1970 429 +.030, ported heads, solid roller cam, victor intake, 10.2:1 comp, C-6 trans, 3:73 rearend W/moser axles
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