Question on Bilstein shocks

Yeah, I know, a lot of people could get it by Tuesday, but it's just weird. Everybody's website shows 11/16 drills, but not a single store actually stocks them. Why? They have every other size from 1/32 to 3/4 at every retail outlet. How much rack space are they saving by excluding ONE size? And why is it a unanimous decision to omit 11/16 by every hardware chain? Friggin' monopolies...

The crux of it is that I won't be able to install the shocks until next weekend.

The OTHER question is why PST and Bilstein don't know the proper size for the bushings. They should be the same on top and bottom. What kind of vehicle would have a smaller stud on the top (chassis) end than the bottom (spring plate) end? That doesn't make sense (so it's probably something Ford did).