So I was scrolling through the forums looking at some truck and I came across one truck that said he had a 6" suspension and a leveling kit. How exactly does this work? It was a rough country lift so it comes with a spacer. But isn't a leveling kit just a spacer also? Is it safe? And the approximately how high does one leaf raise the rear of the truck?

 

I'm guessing they are putting the leveling kit on top of the 6" spacer. I wouldn't try it but that's me. The angles on your UCA's and crap will be all screwed up.

Depends on the AAL but somewhere around 1.5"-2".

IMO, if you want a 8" lift then don't get a 6".

 

Pro Comp stage 1 uses a 6" spacer and I doubt he stacked a 3" spacer on top of that...don't think it's possible and like Sawman said it would play hell on the CV shafts.