You can get a wood replacement bridge from Bob Gollihur (www.gollihurmusic.com
But it's very basic, no wings.
Also from Ray Ramirez. (http://rayramirezbasses.com/Accesories.php
The latter is much nicer.
Bob G. sells many pickups.
This step is the most complicated though.
Finding the right pickup and fitting it the right way can be tricky.
However, just the new wooden bridge with the stock magnetic pickup could be satisfying.
I'd try just that as a first step.