The radius arms will be a twin tube design, one horizontal terminating in the heim, and one below with a radius at the frame end that turns up to meet the other tube....pretty standard design.
Have a bunch of explaining, did a lot of thinking and figuring out tonight.
The drop brackets have holes for both a 35 (outermost holes) and 44 (innermost holes) TTB axle...however I have neither axle. Even though I have 44 beam ends, remember I extended the drivers beam. I didnt extend the passenger, as I wanted to keep stock Dana 50 axleshaft lengths, for ease of replacement later on. So I used the outermost (35) hole for the drivers beam, and the innermost (44) hole for the passenger. This centered the WMS on both sides and they were equal.
The problem was that the slip joint (at middle ujoint) only had 3/4" of spline engaged at ride height. When both axles were cycled at full droop, the shaft actually came out of the sleeve, and came apart. So, I thought I would move the passenger beam to the outermost hole, bringing the beams closer together, and then I could decrease the length of the beam at the drivers mounting end. BUTTTT when cycled, the axle plunged, and bound up.
My solution, did some math and figured if I moved the drivers beam 3/8" outwards from the 35 hole, as well as the passenger beam 3/8" outwards from the 44 hole it would be perfect. Here is the result.
There is 2" of engagement at ride height, and no binding at full droop, or at full bump. Im happy with the position of the beams, and they cycle without axle bind.
I had to clearance the crap out of the passenger beam, remember it still needs to be plated/trussed. At full droop the axleshaft was grinding hard on the lower section, and at bump was grinding on the top...hence the extent of the clearancing.
Need to pull the tranny/tcase and get cracking on the radius arms.