In September 2018 I assembled a ’51.75 Tele-P Bitsa.
See link.
I was incredibly pleased with the outcome but found myself just using the series setting of the Jess Loureiro Pup.
Having absorbed so many comments about the “Flea” bass and the positive views of the Sandberg basses I thought it might be an idea to add a Stingray Pup to the Tele-P.
I own a USA MM Sterling which sounds and plays really well, so I was familiar with what I could expect from adding a Stingray
The three necks I purchased fitted really well to Fender size bodies. A Guitarbuild.co.uk P body, a Squier CV Jazz body and the Squier Tele Ray body. I had no issues with tuner hole size. I used Fender MIM tuners, Squier tuners and Fender US tuners. Maybe I was luck I'm not sure but quality of the necks is pretty good, but the '51 P headstock shape can vary.