Every Esquire I have ever seen was routed for a neck pickup, and I study these things. Admittedly, I haven't much knowledge of very early Fenders.
Anyway, here is an 1967 Esquire that I recently built, although it does not have BKPs. n.b. I am not the girl in the photo, nor am I a girl.
It does have a "correct" veneer rosewood board, mother of toilet seat fret markers, with narrow 12th fret spacing. Also a correct trussrod, which is hard to find. The neck profile is what Fender called a "D" neck, and very thick, not typical for late 1960's guitars but even back then available by special order. The tuners are old Schallers from the 1970's, but you can see the holes and indents in the nitro where the "original" Klusons were once installed.
Neckplate is a correct F-plate with serial.
The body is heavy furniture-grade ash, bridge is from a late 1960's Tele, but the saddles are NOS Ernie Ball from the 1970's that I scrounged up. The control plate is from that time but has some extra holes, probably for extra pickups or switches which is why the pickguard is not the original white 3-ply.
The electronics are also somewhat original, except the volume pot is an old diMarzio from the 1970's, and the tone pot is a CRL from a 1976 Fender. It sucks mightily. I am waiting for an original 1967 Fender solid shaft Tele pot to arrive. Hopefully that will make the tone control more useful, or at least less useless.
I have not gotten around to aging this guitar but in the meantime I am trying to play it and let it age somewhat naturally. It has a huge sustain and a nice ballsy tone but not as many harmonics as I would like.
Cats like early CBS guitars.
