I ordered a blade pup for a humbucker route from Pete Biltoft (Vintage Vibe Guitars) and it fit perfectly and sounds fantastic. He was great to work with, very fast, reasonably priced and I recommend him highly. His pups even come with an extra set of easily interchangeable magnets! He also makes a P90 for a humbucker route, here: http://www.vintagevibeguitars.com/windows/hum90puWin.html. I think the 'dogear' covers usually require a mounting hole near the end of the ears so you might prefer a different cover style. Jason Lollar also makes one, as does Lindy Fralin.