AAR - NG heads the same??

[Cuppatea]

Evening all, i have an '89 NG audi coupe which has been stood for a while and i probably wont ever get round to sorting as its suffering from psoriasis on the roof and bonnet, scuffs and scrapes all round and it has no chance of getting any tlc after picking up the S2 so im going to break it.

I have a potential buyer for the cylinder head but need to check it'll fit the guys audi 100 which has an AAR engine. Both heads look the same at a glance and the codes on the front are the same apart from 1 or 2 digits at the end.
They are both 2.3 10v motors.

Can anyone please confirm they are ok before i strip it and sell it.

Thanks in advance.