[robnolimit]

Looks good so far. for spring rate, think "light" Here's an estimate. 1400 lbs total rear weight. - 225 unsprung wt (axle, wheels/tires, 1/2 suspension, 1/2 drive shaft....) that nets you 1175 lbs sprung wt. , or appx 590lbs per side. If you use a coil-over with 5" of stroke, you have 2 1/2" of spring/shock compression at R.H. + 1/2" of static spring pre-load (never run the springs slack at full open) So think that you have 3" of spring compression at R.H. Now do the math, 590 lbs of sprung wt. divided by 3" of compression to R.H. = 197 lb/in or 200. Now, with the spring behind the axle, you gain on the motion ratio, making the spring feel stiffer. It has more leverage. You may want to drop to a 180 spring. With a 4" stroke shock, thats 2" to R.H., + 1/2" static compression, or 2 1/2" spring compression at R.H. so, 590lbs divided by 2 1/2" = 236lb/in. try a 225. good luck with the truck. R U going to Nashville Goodguys?