I would check you control arm bushings. That may be the sounds you here. If so you should keep oem rubber bushings for the ucas and you could do aftermarket for the lcas. The oem uca bushings wont cause binding. Scotty would probably elaborate more on this since if you are gonna change them y not upgrade suspension so u can launch better
1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.