I was going to do it on my last truck. My plan was to purchase the leaf springs that are used on the Firestone r4tech kit. Then get some traction bars with traction blocks. I was going to call pmf but never got that far. I would think the bars need to be beefed up because they would see more axel wrap with the weaker springs. Then build a perch off the side of the traction block on the inbound side that would rest on top of the axel tube. Then a bracket that would mount the top of the bag to where the bump stop is. Never did it so can't say if it would work.