Originally Posted by dayne808
if i add just a 1-2" shackle to the front will i have issues with the front shaft?
If you just add the 2" front shackle it will decrease the pinion angle around 3 degrees. On a stock pickup this is a non issue, but being you are already running 6 inches of lift angles are already starting to steepen.
It would be my reccomendation you do the hanger and shackle kit so that you are dropping both ends of the spring and keeping proper pinion angle.
Pro Comp actually offers a 6" to 8" upgrade kit that comes with these parts as well as a front driveshaft spacer and track bar eccentric to keep all of your geometry intact.
6" to 8" Pro Comp Upgrade Kit 99-04 Super Duty 4x4
Bear in mind, being a forum member you get a 5% discount as well