If I have understood correctly 260 block is about 0,04" higher than 200 2.5L block.
Because of that it should have quite big squish height than "normal 2.5" 200 gasket head block.
Or am i missing something.

The reason i am trying to figure this out, is that i have 200xs gen2 optimax o-ring block (also 0.044" higher block) that i'm going to use with gasket heads.
200xs gen2 block have LL stamp in it.

Pistons are flat vertex, and heads that i'm going to use are 18789-c3. I'll cut them to get around 150psi compression pressure.

Could i use 260 gaskets, then i should have same squish than 260 motor (does it really have so big squish height 2,00mm?).
Or would it be more reasonable to lower the deck, and get the squish to 1-1,2mm total.