so i have a pr3-3 head
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From: home_of_da_haze, ny, usa
so i have a pr3-3 head
pr3-3 are the casting numbers on the head i have..and 99 is stamped between the 3rd and 4th cylinder..i heard thats the year it was made..but my question is what does the pr3-3 refer to..an si or type r head?
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