Re: Best transmission?
The best trans would be a M5od. However I will note gear ratio minimally change between engine size. What is common is folks with 4.0's changing the internal gears to ones from a 3.0 or 2.3/2.5. The gearing is deeper meaning more grunt. If what you have is too much grunt, you can minimally swap gears from a 4.0 trans (aka longer gear ratios) into your 2.3/2.5/Lima trans for slightly longer gears. At least that's how I'm interpreting what you've typed out as your issue. Or if bogged down, consider swapping in 4.0 gears...lower ratio gears.
It's all a chasing game with pre-OBD software. Or are you running like a Megasquirt or soemthing??
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'01 XLT disguised as a '03 Fx4 Level II.
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