Hey, the SV650 restrictor kits may fit but be prepared to make alterations to your bike if you have. It could be easier to source as SV650 seems more wide spread than the GT650 anyway (it came out earlier than GT650)
// Meditation doesn't mean you have to sit still....
I have actaully spoken to an engineer at KE Engineering who make the restrictors for pretty much all A2 compatible bikes. they are currently in the proccess of making a kit for the EFI models all years. so im going to wait the couple weeks or so until i can order it.