Nice looking project. It'll be a real head turner. I cant give you the information I need living in SA but how did you come to start a technically and mechanically complex build without knowing what the final compliance procedure was? Just asking.
Having built up a chopper from scatch in Qld , I know the process, you are suspossed to apply for permit to build an ICV if it is a DNA frame and not a Harley frame with a VIN number already from transport first but you can apply after . Keep build photos and receipts for parts, frame number and engine nos , are not vin numbers, Build must inspected by engineer, noise test stationary and drive by must be done 94db. A brake test must be done also, Im in Brisbane and used a place up at Clontarf called SafetyCertQld they have a website Phone 1300727792, I deallt with a bloke named Tony, good blokes to deal with, the Engineer used to work for Qld Transport. Cost me $2500 for engineering and all the testing they have to hire a test track somewhere to do brake test and drive by noise test. I did mine at Mt Cotton driving track.ICV is a induvidually Constructed Vehicle . They normally have 3 or more vehicles to do to make it worthwhile . After all the inspections are done document are submitted to Transport by Engineer.Transport drags their feet normally takes about 2 Months for them to issue VIN number. All the requirments to build ICV are on Federal Govt Website forgot what site just google ICV requirements and should find it from there. It seems like a dauting task at first but after doing it wasnt so bad as long as you buy parts that are compliant and build bike compliant to start with.......... Cheers Good Luck with the Build................