Hey Nuts
I realise that my statement can be misconstrued.
I assume that, as it is NSW that we are talking about, a blue slip is needed to certify that a car is fit to be re-registered after a lengthy period off the road? Pink slips are for normal registration renewals, but you need to get a blue slip if the car has been unregistered for a longer period of time (I think more than 1 year, but can't be sure.) That would be the case with the OP. As he doesn't have the rego papers, he needs to get a bill of sale from the last registered owner to prove that he obtained the car legally. He MIGHT have to also provide a statutory declaration regarding his possession but things might have changed since my time. When I tried to re-register a car I purchased after it a had been off the road for a long time, the bullshit I had to go through was incredible. That was 20 years ago and it's no easier now.