My EsCos is a small turbo, drivers airbag only, but was a personal import.
The governments own document says 92-97 so no restriction on version.
http://rvcs-prodweb.dot.gov.au/sevs/182-00.htm
Have you removed the airbag ? Again if the car had no airbag from the factory in '92 then it would seem to be approved under sevs 182-00
Look through this site, and the agents listing. Phone numbers beginning with (07) are Queensland numbers.
http://rvcs-prodweb.dot.gov.au/
If you spoke of your car as a Mk1 Escort then they may not have realised you meant Escort RS Cosworth. We have the original Mk1 Escorts here, some with Cosworth engines.
I'd suggest you speak to them again highlighting to them the car is under SEVS 182/00 and ask about personal import vs SEVS.
Reading the RVCS site linked above, a RAWS company would be easier than trying to do the process yourself.
Well the EsCos is approved under SEVS, the RR is not. But being personal imports both are eligible for personal import.
I've not had any issue with the police and the EsCos.
Yes dump valves that vent to atmosphere get attention from everybody, including police. Recirculating types aren't so attention seeking.