I think you can make it on a silicon Fuzzrite pcb with a couple of component tweaks. I built my germanium Fuzzrite from this one a few years ago.
http://www.ghosteffects.co.uk/pdf/ghosteffects_lunar_incantation_pcb_guide.pdf
http://www.ghosteffects.co.uk/pdf/ghosteffects_lunar_incantation_pcb_guide.pdf