I started prepping a 42 motor today, Here is a pic of the right case with no oil pump studs.
Here is our cabinet in the clean room that we write a ton of dimensions down on. You can see the call out for all sorts of different studs, bearing clearances, end plays and other cool stuff. We remove, re plate and replace every stud in every bike we do. It makes the finished product that much nicer.
here is the pic of the studs installed. They are all within .005 of the correct length. check out the short spacer nut which is the same as on a 45. 41 42 43 and some 44 knuckleheads used this nut and it was extended to the later knucklehead and pan head style sometime in 44.
Here is a pic of all of the parts laid out. I have always wanted to take a picture like this. It is kind of like a widespread parts book picture, but with real life parts. There are a few parts missing, but most of it is there. Check out the circuit breaker, they are so damn beautiful