O.K. exuse me sorry, that is wrong, the b20 sleeves are the same as the ls sleeves just bored to 2.0, so don't you think the gsr sleeves will be stronger, so 1slowcrx, are you happy now, no matter how you look at it the gsr sleeves are not much different but just for you I restated my self, so just incase you're going to reply again i'm 110% sure that ls sleeves are the same as the b20 sleeves, so like i said what will be hurt by doing it to a gsr, maybe last longer, i know my shit, so i hope you do bro