need specs on U-bolts for 14bolt FF with 4\" blocks did a 14 bolt swap and used my old u-bolts, I made em fit, I know not the best idea. I have a four inch block also to calculate in too. My truck is upstate right now and I wanted to have the u-bolts for when I go to visit it again, so I can't take any measurements myself. I need to know the inside diameter of the ubolts and the total length. I know I need 5/8 diameter rod and I think the axle diameter is 3.5 but I have heard 3.25 also. Anyone have any info that might help? Is there anywhere online I can order these things from, I work late so I usually can't get to a shop plus they want 40 bucks for them! Thanks once again, Mike You call that dirty!?