You can make both rear tires hook (or spin) equally by pre-loading the right rear tire. It's as cheap as buying one (1) rear air shock. Install it on the right rear in place of the standard shock and increase air pressure in it until the load on both rear tires is equalized. Incorporating a pressure gauge into the system, you can duplicate the pressure when you want to drag race and let the pressure out when tooling around town. I say that because the one shock on the right rear will "hump" the right rear up slightly and if you're sensitive to what others might say about it, you might want to bring the car back to level left to right when cruising. Personally, I would run it that way all the time, but then I'm old enough not to give a tinker's damn about what others think about me and my ride. But hey, it's cheap and it works!!!!