Bern,
I had a race shop fab up the dual rollbars and mig weld the 6 point together with extra frame braces to pass NHRA tech. Then I cut 1/8" aluminum plate to fit the rollbar and drilled and tapped it with allen screws to hold on the black powdercoated headrest supports. I cut 3/4" plywood to match and had a rod shop pad and upholster the headrests to match the seats. The wife loves the headrests, I used to get S$$t for stepping on the gas[whiplash] now her head is cushioned and I don't think any performance car should be without headrests if your going to drive it hard.Thanks for the kind words.
Perry.