My 6 inch lift has some broken leafs on the front so I decided time to bring it down to 3 inch lift. I have no stock parts so I called Top Gunz and got a hell of a deal from them. I want to make sure what they told me is right. I bought brand new V-Code springs from ford and they are giving me 3 inch hangers up front and 3 inch blocks for the rear. Will this be level for a F-350 single rear wheel? I just wont to make sure about the 3 inch rear block or should I jump up to a 4 inch block in the rear.... The kit for F-350 uses the stock rear block which I though was just over 3 inches. Should I call and get the 4 inch block or stick with the 3 inch block?