That neck is def mid 70s, no later than early '76. Pretty sure the '70 neck would have no skunk stripe and certainly the bigger TV logo.
I would get the pickup(s) rewound. May as well have those old grey bottoms working vs dead. A rewind is about the same price as a good new pickup, anyway.
Pots could stay if they still work properly, but they are 20 years newer than the bass and proper, solid shaft pots would be correct P Bass equipment. The knobs aren't original, either, but could stay just because they are old and have patina. Same thing as the jack, if it's a Switchcraft and works with the new wind/pickup and new or cleaned pots, keep it in the mix.
As for the screws, I wouldn't worry about the pickguard screws. Put the shiny ones close to the bass side of the pickup and the bass side of the bridge so your hand contacts them more and speeds up their rusting and decay.
Same with the pickup screw, just replace the stripped one, and put the new one right off the E string side of the coil for the same reason as mentioned above, getting touched more will speed up it's aging.
I would get the pickup(s) rewound. May as well have those old grey bottoms working vs dead. A rewind is about the same price as a good new pickup, anyway.
Pots could stay if they still work properly, but they are 20 years newer than the bass and proper, solid shaft pots would be correct P Bass equipment. The knobs aren't original, either, but could stay just because they are old and have patina. Same thing as the jack, if it's a Switchcraft and works with the new wind/pickup and new or cleaned pots, keep it in the mix.
As for the screws, I wouldn't worry about the pickguard screws. Put the shiny ones close to the bass side of the pickup and the bass side of the bridge so your hand contacts them more and speeds up their rusting and decay.
Same with the pickup screw, just replace the stripped one, and put the new one right off the E string side of the coil for the same reason as mentioned above, getting touched more will speed up it's aging.