14B FF u-bolt size w/2.5\" rear block........Anyone?? I am putting the ORD shackle flip on this weekend and installing a 2.5" rear block. I need new ubolts to go with this ,but I'm not sure about the size of the u-bolts. Anyone have any measurements so that I may order some and get them tommorow? No I don't have the old ones to measure, that would have been too easy.