It's not borg-warner
Looks identical the that h165
I still can't up load pics been trying to do it the last couple of days
With no luck I resize to what wiki said or even smaller and keep them
Under the 200k and nothing I've done it befor on a different phone
But can seem to do it on this one, iPhone 6s Plus

HA38 is Hitachi H150 3.889 ratio

* Stanza sedan/coupe is 4-link
* Stanza wagon is leaf spring

Japan-built Stanza was H165, while locally assembled may have a borg-warner?

Borg-Warner has a bolt-on rear cover







H165



Chassis Number Plate



compliance plate

This vehicle was manufactured by Nissan Motor Co. (Aust) P/L. To comply with Australian Design Rules ...

Has a HA38 on compliance plate
tho when I got the car the bloke told me it had
A stanza diff fitted way back, so have no idea what
A stanza diff looks like and I thought stanza Diffs are
4 link not leaf

2-door van for sale

does it have a standard diff, or a Borg Warner?

The Sunny Van I had was a 11/78 Japanese made, round head light, leaf spring A12 powered version. It had side windows, but smaller than the ones in the photos. I don't know if this was factory or aftermarket, as the previous owner had also removed the welded in shelf to fit a rear seat. The good news is the fellow I gave the shell to is restoring it because it's in better condition than his one. I can also remember selling some rims to a father/sun combo, for the sons Sunny Van, which was white with solid sides. Suggested an A15 to the father (I was selling one at the time) but no sale.

I got one for sale on gumtree at the moment location Wollongong NSW Australia 😎

Here are two Australian VB310V.







This style was not produced in Japan (2-door van with small middle window).

Actually the Australian VB310 Sunny Panel van was leaf spring as elsewhere and solid sides no windows at all and like all Sunny B310 models in Australia full imports, they were all also just a cooking A12.

Mine went through A14 GX then L20B which even in SSS spec went no better than the A14 GX engine both ran the appropriate 5 speed so ratios were similar between the overdrive type 60 and the overdrive type 63 boxes, However man did it stop when I dropped in a spare set of Works Stanza struts works vented disks and four spots strangely enough brake balance with stock rear drums worked out perfectly with that setup.

Wish I still had it as they were rare back then let alone now, Six years ago when I was working in Bowral in the Southern Highlands one of my Customers had a Sunny van and his checking found just one other registered in NSW at the time.

yeah July '74, and I took the H145 out and replaced it with a BW68 out of the original Defect which was/is a March '77.. and THAT car was an aussie built one... strangely it had Jap spec struts on it...

wanted to put a H150 centre into the H145 housing but the axles wouldn't come out and the car was bouncing around on the hoist, so I put in the Defect's diff drum to drum with the leaves and everything... and the 200B SX alloys wit R14 185/65 tyres... and for an A12 it's for it wild tyre size, but TD3 does have a 60L 4 speed in it...

also didn't have a manual tailshaft for it - car was a 3N71B car... and didn't want to buy a manual tailshaft.... and the BW68's good..

and I did learn one thing... the rear track of a BW68 in a 120Y is wider had Bluebird steelies on my black 120Y and the tyres scrape against the leaf springs, on TD3 those wheels/tyres clear the leaf springs..

edit it has 185/75 R14 90 H tyres on the back of it and 12" rims and tyres on it...

Yes, all Japan-built 1973-1974 B210 were fitted with H145

Is your 120Y a 1974 model? If not then the rear axle assembly was swapped sometime in it's long life.