Ok So the subject may be confusing. Swaping in the 14FF for the 10... I'm going to be swapping in my 14 ff axel soon. and I curently have blocks in the rear. (2.5'') but in the not to far future I'm going to put 4" springs in the rear. I'm curious to know will the same U bolts work for the blocks and the lift springs? I just don't want to go and buy another set of U bolts if I don't have to. THANK YOU!