Just want to know will AU tickford mags fit onto an EF (same stud pattern) and have been told need to add spacer plates? is that right?

you have to use hub adaptors. not spacers. you'll need 25-30mm hub adaptors. lots of people here will tell you not to use hub adaptors. i've used them without a hitch the only catch is you have to retighten them about 3 times within a week if they have been unbolted or just fitted. they need to bite in

if ur desprate, use the spacers or hub adapotors, if not just wait till they pop up in e series off set,

personally dont like the idea of the spacers and hub adaptors, e series is 0 offset, au is 36mm offset

Might want to check if its legal in your state to use hub adapters too.

Also you should have posted this thread in exterior modifications. I will move it there for you.

Cheers