Are you talking about the stock replacement style bar Steeda sells or the adjustable bar? The stock replacement one seems to be a piece of crap. I ordered one to put on my '79 after changind the control arms because the bolt hole spacing is less on the older bars. The mounting surfaces did not match up with those of the control arms well so even when tightened they weren't making contact with the plates on the arms properly.
'00 Atlantic Blue GT - '03 Cobra swap, TKO600, full MM suspension
'01 Corvette - D1 blown stroker
'85 Mustang GT - bone stock except exhaust