Timing is everything, I'm working with Mica on such a project right now.
The normal route for a Skylark pickup is rather shallow, and will not allow for humbucker pickups that are about an inch deep. I'm going with single coil size rail humbuckers (Dimarzio for a tip of the hat to Mr. Garcia). Please see the drawings I made below. I would suggest enlarging the full size of the ring by at least .05 to be on the safe side.
The strat rings are from the back and need to be flipped for proper perspective. The design uses two of the current machine fasteners to hold the ring, as the angled pickup interferes with the other two fasteners.
Mica and I are still discussing design.
T
