Hey Nick, I am pretty sure you saw my R32 when I had it for sale. That car was in full Targa spec when i bought it in SA and had full reg. I attempted to register the car in Vic at Archie Robertson's and received 2 A4 pages of things to do. Needless to say I left it in SA reg. One critical area regarding design of your cage, and please check this out, is a percentage of clear opening for ingress/egress. From memory it is something around 76%. With my current car I have it rally reg'd, fairly simple process involving CAMS National rally license, scrutineering checkover, submission to CAMS assessment board, then Vic roads visit for hand over of plates (allow around month and a half for the wheels to turn). Hope this helps and good luck