I have a 98 12 valve white a 5 speep 4/10 gears and 36in tires whth a USgear over and under Has anyone had trouble with it not shifting right?? They know longer are in business you cant buy the little black box that changes the gears I have come up whth a way of fixing it if antone is interreasted? I would like to right an artical in the tdr on it its not real hard to do but does take soom time and a little inginuwity Let me know thier has to be more than me with this problem I have 98 qud 3/4 4by4 6in lift electric locks 4 wheel disc brakes amp electric steeps bushwacker exstreme flares rancho 9000 shocks dvd/gps/back up camera custom leather int gray with purple insurts, oh the truck is pervo purple by house of koolers blue tooth in sterio and pushes about 450+ hp with all the gages