I have an 03 3500 4x4 SRW. The brakes on a 2wd are the same. The front and rear are NOT the same pad/rotor. The front takes a larger pad than the rear. Ensure before you buy, that you clarify with the disributor on the correct fittment. Aftermarket front brake pad selection is not plentiful. I went with EBC Ultimax from autopartswarehouse.com. UD702 for the rear and UD965 on the front.
At 57k, my fronts are whobbling -- a bit soon.