You could buy the Dark Star'd Ibanez Artcore that I'm selling, then sell your pickup.

(Seriously, though: if it's never been used, it could fetch a real premium.)
Cheap basses there are plenty. Cheap ones that fit a Dark Star without routing,
AFAIK that narrows it down to possibly certain DeArmond models.
But IMO a great pickup like that deserves to be in a top-notch instrument. FWIW the platform I seek for my Dark Star pickup is a good but not-vintage P-bass. (The standard P rout is actually wider than the Dark Star, but that can be concealed with a blank pickguard.)