Working out the geometry so that 60mm sliders fit in the recess along the top side, with enough space to mount the block they need to fit into. Nevermind how I am going to be able to drill out the cavity for them along the edge of a curved instrument, between the two ears.
Yeah... that's going to be interesting. I suppose I could switch to 45mm sliders, but I wanted the extra length.
Initial thought would be a 5 string SD quarter pounder with passive volume and tone controls on sliders...
I was toying with the idea of adding piezos to it, but decided that for this instrument, simple is better.