I have 1983 el Camino bracket car that runs in the high 11s. I have adjustable coil overs in front and single adjustable in the back. The car is at stock ride height. Car hooks great. I want to install adjustable coil overs and shocks in the rear and lower the car a bit. I hate the current stance. I know I’ll need to dial in a new pinion angle with adjustable upper arms. Has anyone done this before? I want a mean looking stance but I don’t want to ruin my launches.