Build day 20

Diff

I'll warn you, for the Birkin, fitting the diff with enough of the suspension in to mount the uprights and therefore the brake callipers to check for leaks in the brake lines is...interesting. I found that with the front mounting bracket attached, I had so much difficulty manoeuvring the diff into place that I took it back off and mounted it after getting the diff  in situ.
My method of diff jockeying was to slide the front end in under the cross bracing until I had the rear end in, tip and manoeuvre the rear end across until I could get the front end through the cockpit back wall and then tip back and feed the diff into place; all the time trying not to damage the brake lines. (and not the first time - shoulders are going to be sore in the morning.)
And of course there are spacers between the bolt holes of  front mounting bracket and the car chassis and these spacers sit on top of a welded-in threaded tube that don't sit flush with the chassis. Fiddly-ness/frustration rating: extreme.

Attaching the mounting bracket with the diff in situ (but rotated 90 degrees CW)

Diff mounted with the speed sensor attached

Half Shafts

The half shafts weren't quite so bad; although it took a lot of swearing to get the splines to seat all the way home. I detached the uprights from the top wishbone and the front mounting point of each bottom wishbone to fit the outer splines to the disc but they are in. (Hint: the longer one goes on the right; the Subaru diff is asymmetric.)

Right

Left

Diff in place with half shafts

The extra weight of the diff has finally done it in for my build trestles (all chocked up with bricks at the moment) so tomorrow I will be going into Beenleigh to buy some jack stands.