i got a head that the guy said it was a 93 b17 gsr, but whats the head casting for a b17?
this is cast PR3-4. i read in a different thread that the pr3-4 is a itr head? just wanting to comform this. also how can i determine what year is it by the casting numbers?

thanks for helping out a noob

 

i think its the first 2 #s on the casting..it should be something like 9/3

 

its 9/2 on a dail on the dizzy side of the head