dreamr

hea guys i was in my local salvage yard yesterday and to my seprise came across a eg with a d15b mill. well the block is stamped d15b anyway. my question is what is the casting number printed on the front of the d15b head. or what could help me decide if its the original d15b head? and, if the valve cover and spark plugs have been removed and been rained on im sure nermous times would it still be good to snag up? oh and will it fit on my d15z1 block? sry bout all the questions in this one guys i just dont wanna pass this up. thanks.....