In Qld, regoing old bikes is pretty easy, just need to have your story straight and be careful what you say.........
Had no trouble registering the American Eagle even though no such bike existed on their website but of course it's age meant they had no records anyway!!

Actually was pleasantly surprised at procedures recently when I registered the Guzzi imported from UK. Bike had import approval as a concessional RAV entry (I think over 25years old) and a new 17 digit vin was issued - just glued it on the headstock and good to go. Bloke doing roadworthy loaded it all on the system and Bob's your former Auntie Roberta.
Transport Dept were a bit surprised but with a VIN simply clicked the answers on the computer and asked for the money, all done in a few minutes.
Of course all my bikes have full rego as I do nearly all my riding with all my mates (IE - alone

) and don't want any restrictions! So I don't know how it all works with club rego but shouldn't be any harder...........