I'm not sure about for gamecube, i would think that there would be a chip for that too, check e-bay they are always on there, and yes they are reversable

Traded in - 2000 SVT Black tan leather DMD, Pro-Flow 75mm MAF, SHO Shop Intake Mystery mod(awaiting installation) Now 2004 Acura RSX Type S 2003 Honda Civic Hybrid