Hey man- quite a few, depends. With the Y2D you don't want to replace the pots (hassle), so I wired the tone pot to be a "coil blend". It's a variable coil split, all the way off the bridge is a single coil, all the way up is full humbucking. Sounds great when split. Also I've got a Silent Circuit in there for noise on the split/single. In my Morse I have replaced the singles with noisefree ones.
Beej, what kind of cool mods can you do with an SMY2d? Might be getting one soon, and you are the mod man it seems...
