This is in regard to leveling up the car "left to right", meaning that with the car at race weight with the drivers weight in the seat should the drivers side and pass side be level? As a reference, should the rear fender lip height be the same or made the same on both sides of the car? On a lot of the cars I see the drivers side sits lower than the pass side, probably due to driver weight. Mine sits that way slightly, but I don't weigh very much. With coilovers and/or shims under the springs on the drivers side, the car could be leveled up with the driver on board, but is it a good idea?