Never mind

I realize and respect that you're an engine builder, and that all clearances are unique to each individual engine but I guess where we disagree is that he wants it to magically fall together and build itself. He was looking for experienced responses to those pistons in a 318. As I said I haven't read any response that said YEP.
They are DESIGNED to work in a 318, so YES they will work in a 318 with open chamber heads. BUT will require clearance checks for chambers, and to determine compression ratio. And most likely milling of domes, chambers and deck surface. I dont know why it's so hard for people to understand. Those pistons are NOT a drop in replacement, EVERY combo is different, so there is NOT a yes or no answer