[WTA] Bass Pre-amps

[lordie]

where can go to get my bass electronics changed and pre-amps, and maybe also a luthier that can change the rear cover to a more user friendly battery compartment?

i am thinking of Aquilar or EMG BTC system but prefered a Bartolini. running 2x passive MEC pups with 2 vol and 1 tone. btw its a 5-string ;p

thanks in advance.