More info from Bearman via facebook.
quote
Any quality UJs are ok but just be careful about the position of the grease nipple. On some UJs it is impossible to get a gun on it. Only way it that predicament is to take off the tailshaft to grease it.
Ask for K5-13XR in a good brand and make sure the nipple is in the same place as the UJs you removed from your Landy.
Here are a couple of pics of a Dana 5-153X. Note where the nipple hole is offset so you can grease it. (see below)
+edit addition..
...same Uni-Joints for the 6x6 propshafts except for the double cardan on the rear driveshaft.
endquote.
I dropped into a big blue bearings business, out of stock of Spicer. I went to a well known truck parts supplier. Nope. They strongly suggested CBC. No one in the ACT likes to carry stock. Everything is available next week. I hate that. I saw SCA have a chinese knockoff. I saw Toyo made in Japan and a chinese knock off called Koyo on ebay australia. I saw ebay australia ads for Spicer K5-13XR as being for Falcon sedans but the grease nipple was in a pregnant bump. So I avoided them as they appeared too different in that respect.
I then switched over to google and found some info - The USA made Dana Spicer parts are in red boxes. The Spicer Value Line ("SVL") are sourced in Asia and in blue boxes.
I decided to stop wasting time. I found the red boxed 5-153X on ebay.com (USA) for $31 AUD per Uni, delivered to my door. And that was at very low paypal exchange rate of 72c.