I built this back in 2017 or so, and used it to make a few roll bars for myself and friends. Never got around to building a full cage for my old Rx-7, and now it hasn't been used in a few years. Works great and is easy to dial in a bend using an angle gauge.
I built it using the https://www.gottrikes.com plans that utilizes a Pro Tools 105 die. I got the 180° 1.75" die and a harbor freight air-over-hydraulics cylinder.
I also have (5)9' sticks of 1.75x0.095 DOM tubing available to get you started for a few bucks more.
Located in Stafford, CT.