Ok so ive been hearing from the guys at the track that its bad for me to be racing without the rear lower control arm reloaction brackets and the rear upper adjustable control arm. They said people have been breaking thier drivetrain without them. Is this true?

My car is currently lowered on Intrax Springs which is about a 2in drop. I also have steeda rear lower control arms and adj pan hard bar and brace.

 

these two links should answer your questions! but real quick it MIGHT BE that their pinion angle was never corrected after their cars were lowered.

https://mustangforums.com/m_1696246/tm.htm
https://mustangforums.com/m_2570375/tm.htm

These are what a few folks, including CrazyAl, have to say.

 

thanks ill read up on this