First of all I have no association with RPM Roll Bars or M&H Engineering LLC, but I know a bunch of guys have been looking for a bolt in roll bar.
I am not sure if anyone has posted this yet, but it appears that RPM Roll Bars has the first true bolt in roll bar for our cars. They seem legit and sell bars for a whole bunch of other cars.
Here is the link
RPM Rollbar - Rollbars they don’t list a price but from looking at their other products it seems the price will be somewhere around $1,200 for mild steel to $2,250 for chromoly. That is certainly not cheap but the fabrication appears really nice.
I would have considered this had I not already dropped my 370Z off at a local Northern Virginia shop for a custom install. That shop quoted me $900 for a complete custom install with chromoly and tig welds. Seems like a really good deal. However, my car has been gathering dust in their lot for over a month.