BTW, you can cut a coil off the springs if they're too tall. The rule of thumb is 1/2 coil per inch.
On another note, Moroso has G body springs that have even less spring rate. They may not be practical for a daily driver, they are designed for drag racers. It may be worthwhile to weigh your truck before you buy anything. A drag race shop or a dirt track racer might be able to help you out. Most truck stops have CAT scales that can give front and rear weight, they won't show corner to corner though.