Note: diff centre is sold. Ring and pinion still available.
I'm pretty sure these are from a later 240 or 740 but not 100% sure (is there any way to be sure?) The ring and pinion are labelled 39-11 which I take to mean 39 pinion teeth and 11 ring gear teeth which would be a 3.54:1 ratio, but I didn't count the gear teeth yet. The diff centre has a tone wheel on it for ABS and/or speedometer. I can count the teeth if it's important.
$100 for the centre and $50 for the ring and pinion. Plus postage.