Truck is a '91 GMC Jimmy, and the axles are from a '73 3/4 ton suburban. I know the springs are the same between the two (52"), and the spring eyes should be the same size. But i'm not sure about the steering arm. Because i will need the u-bolts for the D44 and 14 Bolt FF, would I be safe when ordering the lift kit to tell them that i have a '73 3/4 ton burb? Not worried if the brake brackets will work or not, because i will use extended lines. Anyone know if the arm is the same between the two, or if anything else would not work this way? Thanks! Oh yeah, would I order the extend lines for the '73 too?