My car is a factory 4 speed car. I currently run A body SS springs. (002-003). Bin on the car for well over 30 years. NO snubber. Rear shocks are set tight on the rebound, loose on compression. Front shocks are 90/10’s. Car weighs close to 4k with me in it. It 60’fts in the 1.5 range. Snubbers are not needed with SS springs. The front segment is so stiff, it acts like traction bars. Just my 2 cents.