Obd2 Vs Obd1 Gsr Head

[alloveryou]

I have a GSR head that was sold to me as a 95 OBD1, but it has the intake manifold of a 96+. Does anybody know how to indentify OBD1 vs OBD2 on the head itself? A little help would be appreciated, thanks, alloveryou.

 

[seerx]

you can tell if it is obd1 if the head is a 94-95.u can tell this by the number that is stamped in the head. there are a few #'s on it .It will be in a circle in the left(by #4cyl.)good luck

 

[alloveryou]

Thanks,
What exactly am i looking for in numbers? P72 ? OBD 1?