Yeah. Finding a replacement neck to fit might be tough. I don't know of any companies that make one. You could have one custom built but it would cost a fortune. Get it re-fretted. Even that's not cheap for a good job, but not as bad as a custom neck.
It's a shame how so many guys ruin a perfectly good instrument by de-fretting it.
I should talk. I de-fretted my 62 P bass in 1963.

The guy I traded it to in the late 70s had it re-fretted. He still plays it on gigs.