Oh for Pete's sake!!
So you're giving me the dimensions of the outside covers?!! OMG, you've got to be kidding me. I thought you knew something profound about the pickup itself, not the size of the cover...like the actual size of the bobbins, the thickness of the coil, and the number of winds of the coil wire, etc. Something similar to the difference between a full sized humbucker and a "mini" humbucker. Or the difference between a single coil (Strat type) pickup and one single coil of a humbucker pickup.
Thanks for pointing out the obvious to me, I never would have guessed that SD shortened the pup to fit it in a humbucker rout. (I guess you'd have to call the Phat Cat a "mini P-90" because it too is shorter than a P-90, even though it is considerably wider...wait a minute, maybe we need to call it a "giant P-90", or rather a "giant-mini P-90", yeah, that's better).
Yes, I'm happy now. Mostly I'm happy that I've got a lot of "mini P-90s" in quite a few of my guitars (because they sound so great). Come to think of it, I've got quite a few guitars with full-sized P-90s in them as well. They sound great, too. And also several guitars with mini humbuckers in them. I guess when you've got 60 guitars, you're bound to have a few of just about everything.
Yes, I'm happy. (But I still need more guitars.)