[Max S]

I went with a TR Lane Single Diagonal, which I actually managed to get approved for road use with only a few demands.
I also installed motorsport padding (actual padding, not the thin vinyl stuff).

Because I keep getting comments about it/made fun of for it, here's the explanation:
I'm 181cm.
In the stock seats I'm way back, and my head towers over the headrest.
In a normal accident I very easily touch the bar, in fact I didn't have to contort myself much to hit it.
The padding lets me hit it a little harder in an accident without cracking my skull:

 

[nav04NB2]

Thinking of doing a roll bar swap, My miata came with an older hard dog m1 sport single diagonal, but i'd like to swap it with an M1HCHTDD or X-diagonal, would the alignment of the holes be off?

 

[Bryan]

Thinking of doing a roll bar swap, My miata came with an older hard dog m1 sport single diagonal, but i'd like to swap it with an M1HCHTDD or X-diagonal, would the alignment of the holes be off?

You'd be better off to give Bethania Garage a call.

 

[nav04NB2]

The most obvious problem that I see with legality is that your main hoop cross bar doesn't continue on the passenger side of the hoop.
You might have just overlooked it because that cross bar has been a requirement of SCCA / NASA rulebook forever.

Moti

You'd be better off to give Bethania Garage a call.

You'd be better off to give Bethania Garage a call.

talked to them over email, great people, i was told rear parcel holes will be slightly off but wont hinder roll bar function or weaken the chassis due to being installed twice, ill swap bars bars soon, but its not a big deal but it'll be a "fun" summer job

 

[nav04NB2]

talked to them over email, great people, i was told rear parcel holes will be slightly off but wont hinder roll bar function or weaken the chassis due to being installed twice, ill swap bars bars soon, but its not a big deal but it'll be a "fun" summer job

 

[nav04NB2]

Re: roll bar thread?

so getting the M1 HCHT bar in is a pain, matching up the lower seat belt reel bolt and the upper bolt. my old M1 HC bar was easier, only had the lower seat belt reel bolt to worry about fitting before drilling the other holes. also the damp socal weather lately made me not paint the bar, which i will probably regret cuz i sure as hell don't want to have to install this bar again lol.

gonna swap bars this summer, i also have an older hard dog, m1 sport, did you drill new holes or file the pre-drilled holes?

 

[Bryan]

Sport and Hard Core do not attach in the same places.