Advice on preamp for a Hamer Cruise

[maxoges]

I have a nice Hamer Cruise with delano pickups that I want to upgrade with a preamp.
Does anyone have any advice on a preamp I can install without drilling into the bass?
I would prefer 3 stacked pots.
https://drive.google.com/file/d/0B9h9OKDW8CmKWWxPNkNERnpGYW8/edit?usp=sharing
https://docs.google.com/file/d/0B9h9OKDW8CmKdjFJRUlvM3pwNnM/edit?pli=1

Thanks!

 

[mmbongo]

Bartolini HR 3.3 A/P....vol/blend/bass-treble stack. Not sure why you'd want 3 stacked pots.

Invalid Link Removed

 

[maxoges]

I went with Duncan STC-2S-BO. Great preamp with stacked bass and treble.

 

[GlassToMouth]

I managed to install an EMG BQS (NOT solderless) without any routing, but did drill for additional knobs. A BTC preamp would work for sure without the need to drill. If my stone hands managed to squeezed in a 5 knob preamp in my Hamer Cruise, then a 3 knob BTC should be easy. I even had enough room to run dual 9V batteries without having to rout.