I have 3.73 gears now and they work well with My near stock engine. I likley will go to 4.10's when I get ported heads and cams so I can take better advantage of the improved top end power.
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2004 Torch Red GT
Flowmaster Am.Thunder cat back, SLP Mid Pipe
Steeda Underdrive pulleys
3.73 gears
Diablosport Predator tune
Grille Delete and Mach 1 spoiler
Rear Wing delete 
Mustang Tuning Shifter
Bullitt Handling Kit
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