Integrated roll-over protection on Topless MINI
I am looking for some documentation that states that the pillars on the Mini Convertibles are, in fact, Integrated roll-over protection. This must come from MINI (in other words a sales brochure, tech manual, etc. from MINI would work) to be valid.

The S2000 and Porsche Boxster have submitted info stating it for those cars and SCCA has approved them for entry St. Louis Region PDX Track events.

I am trying to get the info on the convertible MINI's so they can enter too.
Can anyone help?