Sorry for the delay in replying, but it took me this long (few spare minutes here and there) to find this thread. I had trouble finding it because it technically isn't a forum post but it is replies to posted pics.
http://datsun1200.com/modules/myalbum/photo.php?lid=23760OK, so to unravel my own confusion
The early steering knuckles are 'the go' since they are shorter and produce the best/quickest steering ratios. in std form they only fit 45mm struts. I had a bit of brain fade in the original post, but that was the reason I wanted to stick with the early ones.
The later model ones are a slightly slower ratio, but also have wider bolt spacing to suit 50mm struts, but on top of that the tapered hole in the centre for the ball joint tapered pin is larger to suit the later ball joints which have a thicker tapered pin)
You can get em modified (enlarged centre tapered hole, and ovalled out knuckle to strut bolt holes to allow them to fit the wider bolt spacing on 50mm struts) to fit them to 50mm struts. For a few reasons, however, I wish to retain the 45mm struts. SO I don't need the outer bolt holes ovalled out. BUT I want to run the later ute control arms (that suit the larger ball joint) but then combine _THAT_ with the balljoints off of stanzas. These are the same bolt pattern as the late ute ball joints but they move the tapered pin outboard about 1.5-2cm. This basically gives me -2 degrees camber change (i.e. it reduces camber by 2 degrees, not ends up at -2 degrees - it might end up around 1-1.5 degrees depending on what it was stock).
OK so I want the early struts early steering knuckles, but later ball joint. SO all it requires is that centre bolt hole to be enlarged (remembering it is a tapered hole) to suit the larger ball joint pin.
Would this be something you'd be up for? I can (naturally) send the steering knuckles up there as well as a large ball joint so the tapered pin could be measured (I could also send up a later model steering knuckle to compare the hole size and how far in the tapered pin has to fit.)