Thanks guys, that makes sense. Interesting combination of terms in those auctions - both Eastwood and Seymour-Duncan are mentioned, so who knows??
I haven't heard much about the new Eastwood guitars yet, so I don't know quite what to expect from the pickups. I do know the Eastwoods aren't cheap, so perhaps it's reasonable to assume the pickups aren't bad either. As long as they fit and give me decent sound, I'll be happy. The price is so right that it would seem foolish not to try them..but I darn sure don't want to do much modification to the bass in the process. Adding 1/4" of room seems manageable without creating a problematic mod. I can't say that I'm especially choosy about pickups anyway.