What type of Head is This

can somebody tell me what engine this head is off of thanks alot

http://www.shutterfly.com/osi.jsp?i=67b0de21b35a7322a4df

it looks like a B series Head, B18C1 would be my guess

Yeah i agree with a B-series head, im no honde engine guru yet, but i think its from a b16 or 18

p72 = b18c1 i believe, gsr head.