note that the kds0114 won't be labeled the same as this is meant for gameboy advance and gameboy colours run on an 8.something mhz to begin with but the switch will still function the same way.
I just did a overclock on my color that lets you switch real time with no crashes (more handy than you would think...), the only thing is that i used 2 toggle switches to do it. my original idea was to put a triple clock but... i dropped my only 4mhz clock on the basement floor and, it got lost forever . ill upload a diagram and some pictures if you would like