yeah it's a little hard to do on a honda/acura. you would have to mark your socket I think to know for sure. It's more of a V8 racer trick. They also make washers in different sizes to help you index the plugs. (think about it, they all won't be tight right when the electrode is facing the intake side of the chamber).

Anyway's, I wouldn't run anything but stock in a GSR, the factory put the best plug in your car already.