gp shifting?

By GP shift I assume you mean down on the lever is shifting up a gear and up on the lever is shifting down? If so, then no, at least not without setting up some sort of linkage.

Normally you can just flip the shift linkage over to reverse the shifting but the blaster doesn't have a linkage.
 
yes thats what i mean technically thats what its called but thers no way to get a linkage that will work thats what iv got on my zx6r n its so much better