anyone using 1? I traded for 1 awhile back with different ideas for it. now wondering how it would do towing and what kind of mpg's. right now im in the process of putting 37's under it.at 1 point i was thinking about swapping the axles and replacing them with either a set with 3.73 or 4.10 gears. still unsure of which. hopefully make up my mind while putting on the lift. was also wondering about swapping in an overdrive tranny. any suggestions?