GMC Sierra Flowmaster Super 10 vs Stock

My truck got a new muffler on er

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Flowmaster 40 series vs Super 10's
1989 K5 Blazer, stock tbi 350, Hedman 69230 headers, 2 1/2'' true dual Flowmaster American thunder 40 series with 15'' long 3 1/2'' tips. vs 2 1/2'' true dual Flowmaster Super 10's with 18'' long 3 1/2'' tips.

Flowmaster super 10 series silverado
Floaster duel tips. 5.7l v8 vortex With cats.

2008 Chevy Silverado before & after Flowmaster Super 10
2008 Chevrolet Silverado 1500 with Flowmaster Super 10. Single in Dual out with 4 inch Exhaust tips. Please Comment!

Flowmaster Product Information and Technology
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