SoftRock 2/19/13 11:01am 2/19/13 11:01am g 146L 0Edit Deciding on cylinder heads SoftRock PFollowOUnfollow 2/19/13 11:01am 2/19/13 11:01am g 146L 0EditIs hard. S 1 jFacebook iTwitter kTumblrLDiscuss