HEY- Thats me in that picture!!! You know, I never get nothing for being in those- - - well, anyways.
There are alot of pre-bent kits out there. They all fit slightly different. We had two identical kits from Competition Engineering. One went in a '63 Dart, another a '64. The bends were very close, but not identical. On alot of chassis companies websites, they can or will give you dimensions of main hoops so you can refer back to your own cars measurements. When you need subtle tweaking, sometimes you can "bounce" the bend on concrete, and it will unspring slightly. On my '64, I had to do this to open it up slightly to get it closer to the door pillar. Kits are so much the way to go if you are looking at putting in something non custom. The cost of good DOM steel tubing has gone through the roof, and these companies buy in such massive quantities, it just makes good dollars sense.
Dale