Could be a good project.
It was a shame we never got the big engine SWB 126 models. I would have a 560SE instead of an SEL if they had made that model in RHD and sold it here.
There is a monthly event held at Centennial Park. I've been meaning to go for ages, but finally got around to it today:
https://www.classicjalopy.com/2021/10/centennial-park-cars-and-coffee-october-2021/
Quite a good event and I would go back.
This w126 280SE looks nice with not long left on the auction:
https://www.lloydsonline.com.au/LotDetails.aspx?smode=0&aid=27048&lid=3197812&pgn=2&pgs=100
Ignition was a bigger issue then than it is now.
Jaguar struggled with ignition on their high revving v12 engine. A v12 at 6500rpm is a lot of ignition pules per second!