Maybe I'll get one sent over from Cali. I can have Bruce sign it for me then!

I'm sure something will turn up somewhere.

Turns out I might have a 1600 box! It certainly looks like an AO code but who knows?!

1500 diff ratio (4.125) with limited slip diff! Result!

A-O, Let's Go! As the Ramones would say!

That looks like an A0 not AO box, confusing I know but I've posted this 1 before.

If it has an early clutch bearing support then it is probably an A0 (zero) not an AO (letter), what makes it even more confusing is Azero code boxes came in 2 final drive ratios but the easy way to tell is if it has 2 oil drain holes it will be 4.125 and if it's got 1 oil drain hole it will be a 3.875.

I found this out with a bit of research on the internet after buying what was advertised as an AO but turned out to have a 3.875 ratio with no LSD.

Why the Azeros are not on any charts beats me?

If it is an AO box then that's a good score but either way it will be 3.875 or 4.125.

I think you're right flags. It's an early bearing. I'll send it for a rebuild I think and find out then. Don't mind either way really.

Although if you can make it out there is another zero in the number and it's not the same shape as the first oh/zero. The first one looks rounder to me.

You may have an AO then matey,  my box has no other 0's so I can't be sure but depending on what chart you look on a true AO box should be early 70's so I reckon should have a later clutch?

It have an early bearing and short axles so I'm pretty sure it's a 1200.

Sorry if I got you all excited, I bow to y'all's superior knowledge, damn the internet.