Stephen, I do not know if you remember me, I ordered the shackle flip for the 1970 K-20 with HD rear suspension, I had the extra bracket with my rear spring hanger. It looks like no problem to fab new brackets. Well anyhow, I just installed my shackle flip and everything went well until I got to the bushings. I got a set of Energy 3-2106 rear spring bushings. The bushings are 1 1/2" O.D. and fit the springs and shackles fine. The problem is the I.D. of the metal bushings are 9/16" and my front spring bolt and the spring to shackle bolt are 5/8". The shackle to flip bracket bolts and bushings are 9/16" and no problem. I went to the local 4x4 places and to put it simply, they were Idiots. From what I could tell from looking at the book they do not list my bushings. Do you have bushings for my truck. My rear springs are stock. Also, I broke a mounting bolt when I was torqueing (sp?) them. Just wanted to make sure nobody else had the same problem. If it's a bad batch I want to replace them all. If not I'll just replace that one. Or, was I over tightening them? I was using 100 ft-lbs with a fairly new Snap-on torque wrench. Thanks for your help, POFF B.T.W.: Any one else have this bushing problem?