Julza, where in Melb are you?
If you're interested, get yourself a brand new 6 cyl shaft from the link below, then post/give me the new 6cyl plus the old V8 shaft and I will convert the 6cyl shaft to a V8 shaft, just like the factory did, for a small fee. ;)
I have done it a few times now and it's not an issue. Let me know via PM if you're interested.
New genuine 6cyl shaft...
https://www.ebay.com.au/itm/STEERING...YAAOSw37tWAzAY
New genuine V8 shaft...
https://www.ebay.com.au/itm/GENUINE-...8AAOxyni9TFA0x