I've seen only one, but it was a Custom Shop one, so it won't help me much...
Has someone tried to put P90s (soapbar, not single coil sized) in his/her Mustang? As it's slightly longer than either a single coil or a humbucker, I wondered about the routing: how would it go into the switches' cavity?

That's a Warmoth body. That's the only pickup routing option they've got for Mustangs; it accepts humbuckers, single coils, and angled SCs. If I wanted to order them a body like this, I'd have to dremel it a bit on the right side of the cavities... But wouln't the pickups touch the switches?
If someone knows... Thanks! 😀