The springs on the 03's must be larger. The shims for the older trks. are too small. Found a couple of C-180's today and formed them to fit. Thanks for all the help tho.
BTW, my front tires were wearing real bad, had it aligned, and noticed the bumpers on the front were hitting on the stops, even when not loaded. Put 3/4" shims in, which raised front 1-1/2", now its riding much better. I have a 130gal. fuel tank in front of bed, must be putting too much weight on the front end. Had the same tank in my 96 & 00 and never bothered. I know my 03 rigged out the same as my 00 is weighing 500lbs. more.
Larry