Faultline (SFT Clone) Version 2 Modification?

[4stringphuzz]

Hi Everyone,

I built a Madbean Faultline several years ago, before the Catalinbread SFT Ver. 2 was released with the extra "Stones/Stoner" switch. I would love to go back and add that option to my old build if possible. Would there be any way of retroactively incorporating a DPDT switch into the original Faultline that I have? If so, where/how do I make the connections? Any help/suggestions would be greatly appreciated!