I have there questions before I build my BASS.
1. Can I use a guitar Pickup? I bought a bunch of Humbukers and Single Coils from Gitty.
2. How many strings 2 or three
3. Which strings.
Unlike a guitar OPEN TUNING / SLIDE bass is not something I can immediately wrap my little brain around.,
The P Bass pickups that CBGitty sells come in single or a set. The set is 2 single coils wired together in series for humcancellation. You can stack them or put some space between them and they do very well for Bass. I used them with a 4-way switch in my CBG in my avatar. Worked better than I expected for a guitar. A guitar humbucker will work fine too, works well enough for Billy Sheehan in the neck position of his P Bass. Just remember to use 250k pots and a .047 cap.
I built a 2 string fret-less bass with a 25.5" scale and a 3/4"x1.5" red oak neck and one of Gitty's "Bass" pickups. I sized the strings so to be tuned it "G" and they can be tightened to an '"E". The "G" is very convenient when playing with other "G" tuned CBGs and when used with a looper to add bass to your CBG. I did have to order special length flat wound strings to fit the short scale even though I used "Bass" tuners. The flat wound strings are great and virtually eliminated finger/string squeak.
With a Bass amp this bass guitar sounds great.
At one of the Blues Jams that we watch, one of the Bass players heard I built a 2-string bass and he kept bugging me to bring it to one of the Jams for him to try. I did. Before the band started, he took it on stage and fiddled with it with a tuner and no amp for about 5 minutes. Without ever listening to it through the amp, he used it for the first song the band played and it sounded great. I knew I had built a great bass and he showed what a versatile musician he was to try an untested, different instrument without any rehearsal.
There's some grammar errors that can be figured out and the strings can be loosened from a "G" to and "E".