Just wondering if anyone has modified their bass?

Like, I have a fender knock off, but I put a wilkinson wsme4 pickup in it, an instead of the little precision pick ups that gave it an ok saoud, it has a really rich warm tone to it and sounds like a 2000 dollar bass instead of a 200 dollar bass.

The pick up is originally an active pick up to fit a musicman but i rewired the guitar and cut the body out to make it fit.