Stumbled across this thread. I have a similar question but I'm looking to replace a bass split pickup with an actual humbucker. I realize the splits are hum cancelling, but I'm looking to install an actual music man pickup that I have.
I know it's a little late but I'm new here and to playing bass (guitar player for 25 years) but check out Little Bear R.Attack its a multi pedal has 3 different versions of the rat in one and it's only $45-50.