aus is pretty strict from what im reading here. ONly so many bikes allowed in? WHats that all about. In the uk, you built any vehicle, and it has to go through a VIC test and another short test, Costs around £200 for a road legal pack for any motorbike or quad,trike etc. Fitting it and getting the regulations right may take some time. But once all these tests done you go to what we can DVLA and apply for a registration number and plate and bobs your uncle and now insurance is needed.