i just bought a b16 head i think its a first gen. and it suppose to have itr retrainers and springs. and it has a slight port and polish and a 3 angle vualve job. my question is what and where are the numbers that say its a b16 head? question #2 is how do i know it has itr springs and retrainers? question #3 is how do i konw if its been port and polished and had a 3 angle vualve job? ill have pics up tomorrow of the head so yall can tell me.

 

just above the exhaust manifold ports it should say what type it is..