will a ITR head bolt on directly to a gsr block?

 

itr head will bold right on to your gsr block

 

let me correct myself before going just off my advise i dont want you going and doing it then being like that didnt work ,,, from what i understand and have been told your itr head will bold on to all b18a's and b18b's but i dont know from experience

 

Could a B18c1 or B18c5 head be fitted to a B16a2 ?