Hi,
a certified NHRA track will make all convertables under 14.00 ET have a welded in rollbar with a driver's side bar[bolt in is OK] Bar must be wider than shoulders and 3" taller than head, Also all covertables will need a certified 5 point harness, snell 95 full helmet, arm restraints, SFI gloves, SFI jacket[neck brace optional ] neutral satety switch, proper battery holddowns,master battery cut-off switch,driveshaft loop, dual carb return springs.
This is good to 11.00 ET for automatics, a manual trans needs a scattershield if faster than 12.00
You can see my rollbar in my pic gallery, and yeh you NEED the headrests if you ever take the MRS out in the car,if she bangs her head on the rollbar,you'll never have sex again.Perry.