As I said , I doubt that you can move far enough for a full containment seat, in a Miata. I have put many in stock cars and such and they get tight. The biggest obstacle is the end of the steering column. The wheel/shaft often needs an extension to come back to the driver , back in the tunnel of a seat. The egress point is about even with the steering wheel or a little in front of the wheel.

I spend a good bit of my time as a Guardian Ad Litem. I have been knocking down legal dominoes all week trying to get the paperwork inlne so that one child can be adopted.His MOm in NC just needs to sign a little paper, but it has to come from her FL. lawyer, whom I can not contact directly. Ihave found a lawyer near her , for a100$ will handle her end of it . But as usual it is out of protocol.

So yes, i often have a really poor outlook regarding rules and safety , watching you guys worry about insignificant little items in your world.
Sorry , back to lurking . MM