Update
Progress has been a bit slow but I'm pretty happy the way it's turning out.
Injectors and report following cleaning by Witchunter
The E12 guys call this the "Jules Verne" device, and for good reason. It's buried in the heart of the engine compartment and has two coolant hoses and two air hoses leading in and out of it. All were renewed and the thermostatic air sliding valve cleaned and checked out.
Euro-spec distributor (1976 California original was mostly all-retard, very little advance) was disassembled, cleaned and wear parts replaced
New automatic transmission hoses
NOS Bosch Germany plugs ( I know NGK are better but I'm nostalgic...) and new Beru ignition wiring
I located an NOS Bosch FI pump (top)...
...but it leaked upon installation. I took it apart and identified a flattened O-ring that seals the innards against the outer can. It's the one seen to the left of the rotor assembly. Upon replacement the motor was tested for pressure and flow and it's remained bone dry with no leaks.
These O-rings in the pump have an oval, flattened cross section so it may appear they are defective but that is the intended profile. The surround plate for vane/roller impeller needs to be carefully positioned so it functions as intended and the impeller doesn't rub against it.
The front calipers coming together
The bolts are available from BMW but not the nuts, which are available from W&N.
I had the master cylinder and booster rebuilt by White Post. Like another poster, my cylinder leaked from the weep hole indicating the outermost seal was not doing its job. WP did a nice job with the relining of the cylinder with a brass liner but it appears they are using inappropriate seals. I contacted the owner and he said to bring this up next time I send them something and "he would take care of me". Well, there will be no next time with White Post for me.
I bought a very nice FTE/FAG rebuild kit online. You can see the seals on the new parts (bottom) are far more "perky" around the edge than the ones White Post used.
In addition, the outermost seal that failed looks like it's the wrong size or they simply reused old seals. Notice the new design that came with the FTE kit is a one piece, double-hump seal which appears to be more effective:
More to come later...