the reason I was asking was I want to narrow the rear end and lower it and I have to use the suspension I have for now due to cost factors. want to go ladder bar and coil overs in the future so i don't want to buy springs that I will be taking out later. Seems to work good now as I have 1.60 60 ft. time with controlable wheel spin by adjusting tire pressures. has clamp on slapper bars now. the rear shackles have been lengthened 1" to help with the springs being clamped so they don't bind due to too short of swing on the originals. I wanted to take the llowering blocks out that came with the PU when I bought it. thought it would be better with the sliders instead of the blocks. any agreements or not? new to leaf spring suspensions as I used to run a chevelle "back in the day" as they say.