The tearjerker wah project that pedal pcb has is fairly tweakable. It has several trim pots and some dip switches. I’m not sure what the differences would be between it and the Petrucci wah. But it’s worth a look
ok I may of been wrong, while the tearjerker wah would give many of the same parameters to adjust it doesn’t have the six band eq. But that would be a lot to fit into a wah shell without smd.
