I have pretty much resolved myself to the fact that unless i want to have to rebuild my tranny regularly i'll have to swap my stock 3.55's for somethin lower. My truck is used for some off-roading but is also my daily driver. What ratio would be best for this type of driving? What all does swapping gears involve? How much will i expect to spend on a set of front and rear ring and pinions (probably 4.10's or 4.56's) plus installation?