Needed to change the geometry just a bit, and lose some unsprung weight, so I'm working on a second set of uprights. These will again be steel fabrication, but using sheet steel instead of the square tubing I used in the first ones I built. After finishing up the first one, I've come to realize I could probably make the second set out of 12 and 14 gauge, rather than 11 and 12, thus saving a little more weight. As these sit, they are still 4 lbs lighter than the first set I built.