[Jeff Lee]

All RWD cars with a solid rear axle, as viewed from the rear, the engine twists clockwise and the rear end twists counter clockwise.
A drag car need to keep the left & right drive tire planted equally. Whether by pre-load on a 3 or 4 link, traction bars, air bags, anti-roll bars or springs and shocks is up to you. But "balanced" L/R adjustments can't work due to the nature of the rear axle twist on launch.