Bought a couple of cheapo basses recently that I knew would need work. One is an OLP, wiring was junk so in goes the stinger preamp and loom but turns out the pickup is a SD 'Basslines', result.
The other arrived, a VM Jazz and that one turns out to have USA Fender Pickups and loom - score.
Both have had their issues sorted and play and sound great. Happy cheapo bass week
So, have you ever bought a bass hiding a (good) secret? It's nice to be pleasantly surprised rather than discovering bad news the minute you open the box!