I would recommend you buy a NA skyline. Especially with the new Anti-hoon laws that have just been past. You are really risking a lot.
http://www.skylinesaustralia.com/forums/Ns...ll-t213266.html
Do you really think they are that dumb? You know they check Rego plate. Rego plates are linked to the Chassis/Vin number which determines the model of the car. Which means you will be f**k up the arse. Not to mention cops aren't that stupid. The engineer I use trains up most of them to let them know what they can and can't defect and point out what is what.