Yep, us poor guys have to improve our cars,.. slowly.
Sorry, I left out the part about figuring out what length spring is needed for your desired ride height, like 8", 10"or 12" and will also tell you what length of shocks you need, eyelet to eyelet.
Place the tool on the shock mounts, turn the sleeve clockwise or counter-clockwise to raise or lower the height. Once you like it, take the tool off and measure the length from the middle of each heim joint. This will now tell you what length spring & shock you need.
Save up more money, and get the double adjustment shocks. Their worth it for tuning the rebound.