no ALL B-series tranny cases are the same. How much do you want for a case or half ?...cause thats all i really need. What do you mean by how is the h2b swap? I havent finished it yet. But the guys on Honda-tech are running 11's and low 12's with basic bolt on's slicks and tuning so it should be pretty fun! Hit me up on my cell 706-358-7690.