Hi Ppl, would anyone be able to ID this head for me please. Its supposedly a YB cossie 2L. I bought it to fit to a pinto block.

V86HF6090AA
YN0001

If possible would love to know what each part of the number means too. Also if its not asking too much, where would one measure the head from and to to tell if its been skimmed and what safe range should I look for.

Thanks heaps.

-Andy