Total recall mods: 4x mn3005 and powering with a dual 15v supply

[488 Studios]

Hey, has anyone built a Total Recall with expansion board with 4 mn3005's? I'm planning on building the expansion board on stripboard because it's discontinued and simple enough. How do you add a buffer for the clock signals? Should I add any extra filtering or amplification on the expansion board? And can I add a short/long switch by switching out the expansion board, or can I do it by switching the clock frequency, so it goes through 4 bbds, allowing better bandwidth on the short setting? Also, I'm trying to incorporate this into a rackmount multieffect unit, with a dual 15v supply from elliot sound projects. I'm assuming it doesn't need the regulator on the total recall pcb. Do I just wire the negative 15v and ground of the supply to the lm7915's output and ground holes on the pcb? Where do I connect ground? Also, should I include the muting signal on the power supply project?