You might be better off looking for something in an EMG or a Bart soapbar size, (EMG 35's and all pickups of that shape are very close in size to a Gibson-style humbucker) as many companies have adopted these two "standards" with pickups available in all sorts of tones from mean to green to choose from. Also, if you are routing your own body, mounting routs for EMG and Bart style pickups are simple rounded corner rectangles with mounting screws screwed through the ends of the pickup into the body with foam under the pickup to adjust height, instead of a complicated routing to do the Gibson-style humbucker ring mounting. By contrast, mounting the screws through the Gibson-style pickup ring with the sleeve screw under tension into the pickup ears, well, you will be "questioning everybody else's heritage, if not your own," by the time you are done.