I have a Classic Vibe with the high-mass bridge that came with a cover...
Which I eventually removed...
Out of boredom, I ended up putting the cover on my Squire VM jazz.
Anyway, I'm guessing that if the bass was made in the same country as the source of the bridge, it should drop in. Mine was made in China. Otherwise, I've exchanged parts between Indonesian made Squires and MIM Fenders and it either took a lot of work to get them to work together, or it simply didn't work.