The new UMP rule states upper control arm may be altered to get correct pinion angle, just want to know what length upper control arm most are running since they can be altered to any lenght as long as they are not adjustible... And is anywhere making them or is it a do it yourself... I considered buying adjustible uppers, getting it to the correct pinion angle and then welding the nut in place, not sure if that meets the requirement by UMP.. Specs I am looking for are for:
78 Cutlass
Metric G Body
Ford 9 inch floter rear end
Any help would be great
Thanks Troy