Most NHRA
NHRA sanctioned drag strips require a "helmet" of some description for any thing under 14.000. I use an old beat up motorcycle helmet that probably won't really pass tech specs. You could buy one like that for $10 at a swap meet. It may not really help enough in a crash, but it will allow you to run at the strip without being hassled.
Rev
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'66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi.
O.B.C. #2
'66 coupe
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