I still have my original trackbar. NAPA sells a lifetime warranty trackbar. DT Trackbar is supposed to be the best, but it will not accomodate the Maghytec Dana 60 front diferential cover unless you're lifted about 5+ inches (as told here on the TDR). There's also Luke's Link which is a permanent repair ti the trackbar by replacing/redesigning the bal ends of the trackbar, ball joint, etc.
My friend Larry used Luke's link to repair the trackbar on his 98 QC LB and is very pleased with the results. Search the TDR for 'trackbar', and you'll come up with a lot more information than I can begin to provide.
BF