03, with a 2.2 KB, snow performance meth kit, blah blah. Finally blew my diff cover off the rear end while goin down the track on monday. I am gettin gears while i have it apart. I am thinking 3.73's, but others are telling me 4.10's. I think that is going to be too much gear for me. I am currently puttin down over 650 RWHP and TQ on a very safe tune(maxing out pumps) and it is my daily driver and i regularly play with it so....While it is down and out i am gonna replace halfshafts. There is a shop here locally that says they will bulild me a set for somewhere around $600 and that they will last. It is Mark Williams of Colorado, anybody heard of them or anybody use em? Any and all help would be appreciated. Thanks in advance. -Jeff