Got some parts from QA-1 and my machinist friend for the rear suspension. The uprights had rubber bushings all around, andwhile I am going to use the upper rubber bushing, the lowers have to go. My plan is to use a cam-bolt to have some static toe adjustment, so I need the lower bushings to pivot to allow some slight angle change. So, I came up with a plan, drew up some parts and off we go. The new bearing shells are aluminum, and have an internal shoulder to hold the bearing and an external shoulder to act as a stop for the shell. My first step was to press the bearings into the shells. The bearing is a chomoly PTFE lined unit from QA-1, with a 5/8" I.D. Then I put some red loctite on the shells and pressed them into the uprights, from the 'inside'. This way the shell shoulders and the lower control arm will hold all of the parts in place without the need for lock rings. The stand-offs, or bearing spacers are stainless, and fit into the 5/8" eye of the bearing and have a 1/2" I.D. for the mounting /cam bolt. Later on the control arm, the rear bearing mount will be fixed, and only the front will have a cam bolt for alignment. !/2" bolts may seam too small, but the load calc for the bearing/spacers/bolt assemble in dual shear is over 28,000 lbs, and there are two per upright. So, I feel pretty confident that this will be plenty strong enough. This is the little stuff that I think is really cool. And, no one will ever see it when the car is done.