Close, it was a 68.
I can call Jeg's tomorrow and verify that they still have the specs. They bent the bars according to the measurements I gave them, like I said I had them cut everything long so I could fit it as I desired. I left about 1.5 inches between the windshield and the halo bar, controled the heigth on the hoop bar by cutting the front legs at the top and bottom so they laid correctly in the dash pad and against the windshield. Then cut the dash bar, speaders and door bars. I had the rear bars bent here at the house using a 2X4 template I made, but I haven't installed them yet. I used a family bar as the basis.
Hope this helps
Careful your character's showing