upgrade the tires...generally one section width wider, one inch larger wheel, and two sizes smaller sidewall(ex.215/70-14 to 225/60-15). i also went to a performance tire with an "h" speed rating(130 mph) which is a stickier compound... with no factory sway bars of any sort, it would still eat corners... scared the hell out of a friend taking corners near where i live at over double the recommended speed(i.e. 25 mph corner at 60)
Suspension is different for the front from 97 to 98. Afaik one is TTB (97) and the other is IFS (98) that has upper and lower control arms (UCA and LCA)
I don't think TTB equipped trucks had a front sway bar so that might be why you can't find info.