[TonedevilGuitar]

I'm not sure Alistair's method for pickup installation, but I could see how it would be difficult through his offset soundhole.

As for mounting TWA, somewhere in the center of the back would be adequate, I don't think it matters as much where it mounted as long as it doesn't impede the player. I've installed 2 of these in our Tonedevil models with success. The only downside I noticed is they can't get too loud without creating a feedback loop. I had hoped it would act more as an amplifier than an effect module. But the effects are pretty cool in addition to the harp sympathetics.