Check this one out. Costs about the same as a Flowmaster. You will most likely move the power from the low end to the high end with these. It's almost like going with straight pipes.

Classic Chambered Exhaust Inc. - Home Page

Pictures and sound clip here:
Anyone try Classic Chambered Exhaust? - Tundra Solutions Forum

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2007 SR5 Crewmax 5.7L 4x4
Mods: nerf bars, Truxedo tonneau, radar detector power, fog lights, black billet grille, rear differential breather, parking sensors, Line-X, power tailgate lock, hood safety latch mod, one off driving lights behind grille, Pioneer NAV w/ OEM camera, Flowmaster 50 SUV dual/dual, blue LED dash lights, Volant CAI
All mod descriptions and pictures © 2007,2008 by Toxarch. They may be copied only for personal use and the mods may be done for non-profit only.