SINISTR: Thanks for the reply, mate. If it's legal to have a 6 point cage in my car on Victorian roads, then I'd just get the whole thing welded in. I was just lead to believe that only 4 point cages could be used in registered vehicles.

Am I correct in assuming that that Cusco cage comes with some kind of Japanese approval, but no FIA or CAMS pre-approval and that you need to get it inspected to pass the requirements of CAMs to be used locally?

My car is registered as a 4 seater at the moment (despite the restrictions for rear passengers being 38kg and a seated height of 50cm hahahah), so I'd have to change that first too...