hi all..,
i picked up a bluebird wagon tail shaft 2day and put it in, the length is perfect for my ca18 conversion but im using the stock ute diff, obviously the rear yoke is diff but can i just change it to a ute one, so are the uni joints the same (bluebird and H165) ? any help would be great...

Should be the same rear yoke shouldn't it? Do the wagons have H165?

All series 1 & 2 wagons that came from the factory with the 4 speed manual used the H190 diff.
All series 1 & 2 wagons that came with the 5 speed or auto came with the H165 diff
All series 1 & 2 sedans used the H165 diff
All series 3 cars used the H190 diff.

The series 1 & 2 four speed models, sedan & wagon, came with a one piece driveshaft I believe while the cars that came with the five speed or auto came with a two piece driveshaft, so if a one piece driveshaft was salvaged from a series 1 or 2 wagon, then we can assume it is for the H190 diff & if the driveshaft is for the H165 diff then it will be half of a two piece unit which can not be used as-is.

I do not know what arrangement was used in any of the series 3 cars.

H190 yoke is the same as H165 anyway

if the ute tailshaft has replacable unis in it then the yokes might swap over...not that you need to

I was too lazy to get my P910 parts book out. Now i don't need to, so thanks for the info.