http://www.rta.nsw.gov.au/registration/downloads/vsi/vsi09_rev4.pdfHere are the NSW requirements for wheels and tyres. Not that hard to look up and better than guessing.
The wheels themselves should be legal to use on the road but it will depend on the size of them.
Going off what is said in the document a135 or 145 tyre which is what is commonly used on 3.5" or 4" front runners is illegal.
That being said I had mine engineered when it was first built with a NSW engineer's certificate which had 135s down as the front tyre width.
it also states in the document that the maximum rear width for something like a 1200 would be 7" or so.
Offset may or may not be hard depending on all the options available for whatever wheel you choose. You can always measure it out on pieces of wood or cardboard when you have the suspension sorted to give you an idea of where the back spacing of the wheel will make it sit maybe?
You NSW guys have it easy anyway, just got to find someone lenient enough that will give you a pink or blue slip when you get defected. Look at all the crazy cars on the net and at shows with rego.
Quote:
I will only give it a gutful in a straight line and probably never go quicker than the speed limit anyway.
Sure you won't haha.