Is 2.5" lift where it's limited or where the launch creates it's best point? How long are the rear bars and what is the instant center? Have you adjusted pressure in the slicks and tried raising the stall launch on the brake? Spring rates in rear and front will help us. If you get lucky to have a four corner scale used to adjust the corner weight, it would help establish a baseline for "carrying" the the car through at least the 110' mark to get a better feel for where to tune it for launch, carry through, rollout, and second gear "settle" so this thing won't lose an ounce of "pull" through thte run.