alright heres the scoop. I have a 97 f350 and I think the front leafs are pretty worn, it has 170k on it and the 2 leafs in the front are completly flat. The leafs in the rear look good and have a helper spring on the top of the pack, im not sure if they came stock with that or not. Now my question is my buddy has the newer body style truck, i believe its a 99 f250 and it has 3 leafs in it. Does anybody know if these would fit and how much higher they would lift my truck, Id measure them if i could but i was sent out to Yuma AZ and my truck is in Cherry Point NC. Thanks for any help guys.