i need this for 4x4 rear end

[CG]

ok im not sure what these are called. i have a 71 half ton 4x4 that has the under axel mount for the ubolts to pass through and hold axle assembly to springs. my ubolts are for the other style. the one that sits on top of the spring assembly and the u part of the ubolt goes around the axel not the spring. so i need either a set of ubolts that are squared off to go over the springs or i need the upper style mount and i can use my current rounded ubolts (they are new). i would prefer the upper style mount assembly. i thought i saw what may be those in one of tee's pictures. thanks and i hope i described this correctly.