I need a measurement on the 4001 from the center of the 12th fret to the leading edge of the neck pup and from the 12th fret to the leading edge of the "bridge" (HB) pup - not necessarily precise but within at least an 1/8 of inch. As an after thought, could also use your string width outside to outside (widest distance across pup) at the leading edge of the neck pup. And, for what it's worth, I've been toying with some SD Ric replacements in the Dimento HB thread in the pup forum. I'd thought about doing a seperate thread for Ric's but I have the impression most Ric enthusiast's are pretty purist at heart. But if you ever wondered "what if" about some Ric pups, you may find it there - at least eventually - as they roll in.