It's a little late, but how about finding a piece of steel tube/sleeve of the correct ID and long enough to go through the bracket with about 1/8" sticking out in the front so you can tack it in place, and drill out the holes in the bracket to achieve a transition fit for the sleeve. Install the track bar, slide the sleeve in and tack in place, then secure using the bolt.
'90 YJ w/4.2l & 4.0l head, Weber carb, 5-speed, 4" RC lift, 33x10.5x15 BFG MT KM2s.
Last edited by NH2112; 05-20-2012 at 08:45 PM.
Reason: Damn you autocorrect!