if that's the case then you can never have too many spare parts, better inspect the diff if you can to suss out the angles on the upper and loewr arms. The bluebird boys flog out bushes when they swap in a R31 rear end without re postioning the mounting tabs

200B is Datsun 610, isn't it? Bluebird Series II is Datsun 910, which is two generations newer than the 610.

Bluebird family:
510
610
810
910

All of these came, some with IRS, some not. Some 510 sedans were even non-IRS.

With the 200B, Japan-built are usually IRS, but Australia-built i think came with a BW straight axle.

yes i should of been more specific,
1: both sedan rear ends
2: both have 4 links, not IRS

and not all 200b's had IRS rears
77-78 did, late 78-81 didnt

the answer to that depends on:

- Bluebird wagon diff? bluebird sedans are a 4 link rear where as 200B is independant like the 1600 if I'm not mistaken. if that's the case then nope.

hi fella's, my coz whats to know....
will a series 2 bluebird diff fit under a datsun 200b sedan with any mods to do so???,
as hes looking to buy it