OOPS!
I just looked at that old P-bass neck, as well as one from a '66 Coronado. Neither one have a skunk stripe. I really pictured them in my head as having it. Ah well... Sorry for the confusion.
The real problem would be getting the super thin fretboard off. Like Shimmy says, the original fret slots come within 1/64" from the bottom of the board- all the way across.
Another thing you could look into, for the neck bow, is what is called "compression fretting", where you use wire with a thicker tang. When it is pressed or hammered into the slots, it makes the neck bend back a little. If the slots are already wide, or have been buggered up by pulling the old frets out, the slots can be filled with epoxy or (maybe?) CA glue, and recut.
Stew mac/Dan Erlewine has a real good book on fretting techniques, I have it somewhere.. If I find it, I'll post the title. Or you can probably find it on their website. It includes a bunch of vintage refret jobs.