Door bar on a 97 miata

[Andre]

I have a 97 miata with a miatacage on it , but the door bars are not installed.

Is that alright or do I need the door bars for it to be legal? I brought the car to a shop and they said it wasn't.
I looked in the rules pdf and couldn't find anything that said it wasn't ok to have that off.

I am signed up for the NHMS event so I have to figure something out quick if it's required.

Thanks for the help!

[Chrispy]

What class are you planning on running in?

[Andre]

its a ST4 car without carpets. So SPC until I get some.

[Stynger]

Roll cages aren't required in SP, just a roll bar for the Miata. As long as you have the stock bars in the door, you're good.

[Chrispy]

Need full stock door cards, door bars are only required in SPC if you have composite or modified doors.

Petty bar is required if you have no passenger seat installed.

[Andre]

Very good. my doors are completely stock/unmodified.

Thank you!