Ok here what im working with. Its a 79 cutlass with a iron headed small block with turbo 400 the front end has ice man core support, glass bumpers and hood, speedway upper arms and stock lowers moroso lite springs, strange single shocks, manual steering, heater delete and stock brakes. The rear is 9in with gm disk brakes mini tubed with a frame notch c/m double adjustable uppers and lower arms,glass bumper fuel cell and batt in the trunk. Alright here the problem is it has coil overs in the rear single adjustables with 130 springs the car sit perfectly how i want it. The driver get in it "240 pd" the drops about 2 in would 150 springs help this? Also since the rear has all rod ends should i install a track locator bar behind the rear end?