lifted h2 with roll.....

[ASTAR]

I did 4:88 gears in mine and it was about perfect with 38" tires. With the 37's, its gonna be geared a little high. That will give you more power but you'll be spinning higher RPM's down the highway which will make your gas mileage suffer more.
As far as the body roll, the only thing that will help it is a stiffer sway bar. You can buy them for the H2, I considered it with mine but it must have "settled in" as Ken says cause it stopped bothering me, I assume it got better without me actually realizing it.