You should probably call rusty himself. I just ordered a lift for mine. And have been told about the springs not fitting correctly. But as far as pre 80 I cannot help. Rusty is awesome and he will answer any questions. That is a great price. I paid more for mine direct with him...Oh well. Not much more. It does come with everything less the drop pitman arm. Which I am going to try without. Good luck.
Stak 3 speed
44" Pitbull Rockers on Trailworthy H1's
Tow Rig Daily Driver//
2007 6.7 CTD Dually