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Since my 2000 has that trans, I'll chime in. I am looking at the gears, and decided on the 4.10's. It is right for that engine. But about the trap speed. On the calculator, or formula, I can hit 108 at 5800 rpm with 4.10's in direct, and 119 or so with 3.73's.

The formula I have is (all the same result anyway) RPM= (gear x rear end x mph x 336) / tire diameter.
 
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