Re: FPR Springs / Shims
Run the gold spring. About 65 is where you need to be. Running the other springs isn't going to really hurt anything but honestly you don't need them.
2001 F-250 4X4 SCSB 7.3 Auto X Codes w/ 2" Hanger/Shackle Drop Kit-38R w/Turbomaster,AFE, T500, Regulated Return, 6.0 Tranny Cooler, JWVB, 4"Exhaust, Hydra w/ Gearhead, PHP, and Powerstruck tunes, Powerstruck 180/100's Live Tuned by Powerstruck and then some!