The R32 wont be effected in the import rule i dont beleive. Unless its changed again.
That car is a piece of shit in my opinion 14grand for a stock R32. talk him down to 10 grand and take it with years rego.
Otherwise try the Cars for sale in the forum and see wat there is to offer and wat ur getting urself into. Its one thing buying one but its another thing buying one with a purpose . If u want it how it is take it but im assuming u want to modify it.
Anyway, theres much better Private sales out there, but if u really want to get one from a dealer try Envy imports or something like that on Parramatta Rd and come with a small warrenty , but thats no good to u if u go changing everything on the car