Nissan crankcase numbers

[CNHSS1]

OK Chaps, get your thinking caps on!
i need pics of ET, DE and DET blocks, exhaust side and inlet side showing the whole block side. the reason being i need to know if all ETs carry the same block design (mk1 and Mk2 etc), any differing casting holes for engine mounts, extra block ribs etc etc and the same with casting numbers. this also applies to the DE and DET too, but to a lesser extent.
any of you got spare blocks you can email me pics of? or pics of your motor during rebuoild etc?

some pics below of what i need




anyone know how i cabn find what the Nissan numbers cast into the crank cases refer to? on Fords its family of engines, batch code, casting tool number etc etc, any idea with Nissans?

cheers
Craig