Need help identifying diff head, U series?

[Di]

Got a diff head I want to identify, has 8 bolt hole for the crown wheel/ring gear.

some measurement I got:

(centre to centre) distance between 2 bolt hole that next to each other is approx 47mm

(centre to centre) distance from 1 bolt hole to the other one on the opposite side cross the axle hole is approx 125mm (PCD)

diff head bearing seat outer diameter approx 42mm

crown wheel/ring seat diameter approx 103mm ?

Can't really measure the actual axle size without the right tool, but with ruler and wide oppened eyes I'd say between 22mm and 23mm?

Is there anywhere else I need to measure to help identifying?

I only have the diff head, nothing else...

[Dell'Orto]

Pinion flange PCD is easiest way to tell

http://www.toycrazy.net/index1.html

[Di]

Pinion flange PCD is easiest way to tell

http://www.toycrazy.net/index1.html

yea got that page in the bookmark, problem is I only have the diff head nothing else