Roll cage question

[sinned]

I am putting a cage with no rear bars in my Elco, it will be leagl for all of the open road high speed events in Nevada (I work with a tech official). It should also pass for SCCA and NASA, I don't know if NHRA or IHRA will let it through.

It is impossible to lay out a blanket statement of yes or no, even if tech tells you no over the phone, when they see it in person they may allow it if it is properly built.