looks good. I broke my first one which had super thick tube like yours, but had a slip shaft of solid tube in the front to allow max rotation (no need for a joint or shackle)... The solid 1.25" thick cold steed busted like a piece of balsa wood after doing a burn out on a dirt road. Not only proof of a poor design or choice of materials on my part, but also stressed the point very well of how much torque is going on down there. Its an incredible amount.
My current one is similar to the one you just did, though I used RE's instead of a jonny joint - and works well. The axle side RE's allow the bar to direct the front attachment point a little easier under flex (wiggle side to side as the axle articulates). I would really keep an eye on where you connect the top bar to the bottom one though. As thick as that tubing is, you do risk folding that tube where they come together. Either after landing on it (mine has saved my drive line a few times), or from doing wheelies down your street.
cheers!
Dustin