DO IT.
Before I put my lift on my H2, my gas mileage was roughly 11-12 mpg. That was driving mostly city, minor highway.
When I put the lift with the 38's on it, my mileage immediately went from the 11-12 mpg to 8.6-9.1 mpg.
My logic was to install 4.56's which would bring the truck as close as possible to the stock configuration.
Point is, though I only installed them this weekend, I am averaging 11.0-11.5 mpg with way more power.
Excluding the labor because I did it, I've got less than 700 bucks in it. At a 2-3mpg increase, it won't take long to cover the cost of the gears.
Anyway, DEFINITE improvement, well worth the effort and money.
Mark
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