Thanks for the advice. I should also add that the pickup in there when I got it is not original, is not a Fender pickup, and was not professionally installed.
I'm not happy with the current sound and since I don't know much of anything about the existing pickup anyway, (and it's not original), i'd just as soon take the opportunity to indulge in picking out something new. I'm not terribly concerned with preserving the current character of the bass since I don't know how it compares with the original pickup anyway.
I took it to a guitar shop last night to see what they might have, and they suggested I replace it with a Seymore Duncan Quarter Pounder, which they didn't have in stock.
http://www.warmoth.com/Quarter-Pound...P1438C804.aspx
Has anybody had any experience with the Quarter Pounder, or for that matter, any other pickups that fit this bass?