Hmm, I would do about the opposite. Increase both damper rebound and swaybars to calm down the rear and avoid any unwanted rear-end movement.
I like to lift up the car a bit and soften up the springs while I`m test-driving & tuning, and then lower it back to race-height when it behaves like I want it to. Throttle-control will off course allways be a part of this, needs skills to drive any fast car.

Gt: fairlane305