Well havn't run the t bars but pa_jero uses ironmans leaf springs and likes them i think the big thing between the two i've noticed is ironman stuff has been easier to get and sometimes cheaper. I think if your running a heavy front end you'll love the up rated tbars. I noticed a much better ride when i switched to up rated tbars on my 89 wish i had done it years before.

89 2 dr turbo diesel
89/88 "Backwoods sas"