I REALLY need to get rid of the 3.73 in my Burb. Anyone know a shop that will give me good service at a great price? I have a 14/10.5 diff. THe next question is.... I drive on the highway a lot and the sand about 10% of the time. Even with a 498, My bottom end is horrid with 3.73 and 37" tires. Would 4.56 or 4.88 be best. I would expect I'd pick up a few MPG since I won't need WOT to get on the freeway or pass slower cars. 55 MPH is around 1500 rpm... Now if I could just figure out how to add a transfer case to my 2WD for those times when crawling is needed.... Thanks!!!!