I also have the 6" Skyjacker Spring lift and 35" BFG AT/KO's. They're a couple of things you'll have to take special care of while installing this lift...
The first being installing the new steering arm onto the steering knuckle. I had to remove my front axle and take it to a shop to have the three studs on the drivers side (where the old arm was) extracted. It took the guy at the machine shop about an hour to remove them so its probably NOT something you could do at home, I couldn't atleast. That was really the only hard part on the front install. The rear however (like everyone who'se installed these lifts) has one major hard spot as well. Dodge for SOME unknown reason installed the driver side front spring bolt from the inside of the frame rail out. Because of this you will have to remove your gas tank to remove the bolt. When you install the lift kit reverse the bolt because there is enough room to get a nut and wrench on the inside of the frame.
Also, when removing your gas tank you could do what I did and cut the bolts that hold the straps to the frame and then regret not seeing the easier way of doing it. The easier way (and the way I ultimately had to do it) was where the straps go thru just under the bed there is a nut that holds them up, just undo those three nuts and the straps will lower nicely out of the way. That is ALOT easier said than done tho, because those nuts haven't moved since your truck was made (unless someone along the line installed a newer gas tank).
If you have ANY questions about this install please email me, send me a private message, or whatever and I'll help. If you want I'll even give you my home # so I can talk you thru steps of it.
Just let me know,
-Chris
P.S.- I got the Skyjacker shocks that National Tire and Wheel reccomended with the kit. They ride really nice, maybe a little bit soft on the street tho. No complaints at all on the trails.
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1979 Dodge Powerwagon 150 with:
6" SkyJacker Suspension Lift Springs w/ 3" factory blocks, Custom Axle Vents & Steering Shaft/Knuckle Joint, 35X12.50X15 BFG AT/KO's on 15X8.5 American Racing 767, 360 w/ 2bbl & Crane PowerMax Cam & Valvetrain