Well it's most definitely my dumb fault I think. Ordered a new ignition module which I'll see if I can fit without removing my distributer.
Turns out you need the Bosch style HEI distributer if you want to run the 12v coil I've got. Hopefully that fixes it otherwise I've got an expensive paper weight.
I had an old distributer in storage, out of a scorpion I think, which I'm cleaning up and hopefully that does the trick. Got a bit of surface rust in the wreckers yard. But I'll not have time to fit that for a while so I need to get my ute running with the existing distributer for now.
New parts should arrive this week and be back on the road this weekend fingers crossed.

Any advice on identifying the HEI Bosch style distributer for a 4g54 to help me with making sure I've got the right one?
Would be awesome if the one I bought by accident a year ago works!

Cheers
Alec.