Just a few questions
 

Ok before I go and tear down my Z car engine. I'm just wondering if You can safely put a P90 head on the early style 280ZX block that came with the N47 Head. I'm mainly worried if all the oil passages and coolant passages will be right.

any L series head will bolt on any L series block ;)

I know that. But don't the N47 block and F54 Blocks have different cooling passages?

lol, that's between the cylinders, I believe the F54 blocks have siamesed cylinders, where no water goes between the cylinders, and the N42 (not N47 ;) ) blocks don't have siamesed cylinders, where water can go through between each cylinder.

Yes N42, sorry. And I new the F54 Had Siamesed cylinders as well but I didnt know if the water ports would be the same. Well this is good to know then. Now to put a P90 head on a N42 block lol