73' B3 340 Duster pro touring build

Time to get started on the rear, I've assembled some parts and made some others so I guess it time to light this candle. I made weld plates to hold the rear at what I hope will be the ride height, set at 2 3/4" from the frame rails(maybe lower if I can) checked to make sure it was level and square with the car and tacked it into place, now I have a firmly mounted axle in any position to work and build off of.....cut and fit the 1.5", .120" wall cross bars for the shocks and upper front mounts. I might be changing the style of the rear bar to rectangular tube to get the upper shock mounting position a little in the car, once i get all my measurements and templates made I'll cut my brackets for the mounts and It should go pretty fast from there. I made the lower mounts but will be changing the design to get all the geometry correct, the aluminum one in the photo is a mocked up prototype and was designed to mount both the lower mount and shock all in one, but I think this will put the shock out a little to far and a little to much on a angle once mounted.
In the last photo Im holding the exhaust hanger reinforcement and thought about making bigger, thicker ones and weld to the front support bar and bolt back in the original place and remove the center part of the bar there it passes over the driveshaft hump, I saw this design on one of the Air ride suspension company's design for a E body