Re: Dare to ask?
Definitely go with a new set of gears or a supercharger. 3" should give you no problem with the 38s, but I did a similar thing with PB MadDog 39s and a 5" custom Rancho lift on my '03 and ended up putting in higher ratio gears after one month. My mileage went from 11 mpg to 8 mpg, but it was a lot more fun to drive!
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Hummer, like nothing else
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