Went to the transport department,

45mins later I have a rego for a double cab 6x6.
On the previous matter of down plating the GVP, and the complete lack of knowledge on this subject by both compliance's and transport, I utilised the service of a chap who's does all our Imported vehicles, also used to work in ACT for the department who is responsible for ADR in Australia.
Even QLD transport are now saying you can't down plate a 6x6, don't listen to them, however some people are stating that a S1 plate is all that is required, its not without a S2 plate also, you are not covered by your Insurance, basically its a waste of money obtaining the S1, you would do so at your own risk.
So a flat tyre to change and its off to the tip in the morning. Cant wait.