I got one ('78) at a pawn shop a couple years ago for $400. It had a TON of good "vibe".
The stock electronics are somewhat muffled. You can brighten it up by changing the wiring. The pickup is a standard strat shape, so there's lots of possibilities for upgrading that. (Including one by Aero that is specific to the Musicmaster bass - it's killer.)
The bridge & tuners are pretty cheesy but I suppose they're usable. (I'd probably modify it with some quality tuning gears if it were to be my main player.)
Overall, a very cool bass. Definitely worth hanging on to IMHO.
