I dropped off my axles to have the bearings pressed on and I forgot a few loose ends! They are waiting for my call! Help me out ASAP please!

1. Which backing plate is for the left and which is for the right? Here are the casing numbers for the LT1 plates:

A) 219 WN4
B) 163 WN2

2. I forgot to check, but on a Moser 9" rear, which axles is short and which is long (i.e. which is driver's side and which is pass. side)?

thanks!