It's a good bit of gear to look at, I have plenty of pics on my phone of it.
I'm running the same diff assembly in my sunny now, I based the 5 link on the same measurements as the 120Y, it uses a Watts link and I've gone for a panhard rod set up. Ive set my diff up 50mm back from standard same as the 120Y.

Sorry for the tease fella's... A nice gentleman came along and put a deposit down on a lot of the good bits.

I have posted some Sunny stuff on ebay this arvo which might interest some..

Just going through some stuff and I found a Datsun competition geared oil pump for the A-series which needs a repair. I have two main bodies (both which need repair) and one set of internals. Both main bodies can be repaired with a bit of machining. happy to sell as is.

Inbox me your phone number if interested and i'll send pics..

140Y for sale in Mt. Pleasant

http://autoguide.co.zw/Datsun-140-Y--SDX---WHITE-Zimbabwe123.html

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140Y for sale in Mt. Pleasant

http://autoguide.co.zw/Datsun-140-Y--SDX---WHITE-Zimbabwe123.html

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hows this doing dave?
found this guy on 1k.com might be too late for you
or not suitable, either way just in case
http://datsun1000.com/TopicView.asp?TopicID=1361&Page=1#Post10535

Im not sure thats his problem though, but its even better if bores are thin to re-sleeve for the 80mm then grout the bottom end. Sleeving is around 450-650 with hone then grouting can be done at home up to the welsh plugs. These forgies are suitable depending on compression needs eg. low comp (small chamber head)
https://www.ebay.com/itm/POLARIS-800-R ... 5hYeO82:rk:8:pf:0&vxp=mtr

higher comp (A14 crank/rods but A15 crank will need deck reclamation process to raise the deck 1 or 2mm before sleeving. A common on industrial and defunct engine blocks)
https://www.ebay.com/itm/Wiseco-Forged ... :1&vxp=mtr&frcectupt=true

here's another. You can see why the battery has to be moved

https://sun.ap.teacup.com/tabayann-b10/174.html

The compressor bracket are attached oil pump bolt and front cover. The adjuster is from thermostat housing

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I can't seem to find the correct fork dust cover PN 30542-N9000.
However, I did order another one that is for a 1977-1979 200SX and seems to have the same size rectangular opening one the bellhousing.
That part number is 30542-E9000.
I'll give an update as to how well it fits once I receive it from Thailand.

Thanks David