in the middle of my build & im having a the hardest time tryin to find a hi comp 82mm Headgasket so was just gonna run the gasket i have now.

but my main question was Does bore & stroke effect compression ratio's?
My GSR is 82mm bore With 89mm stroke "Ls crank".

Also iv heard of ppl Actually removing a layer from cometic headgaskets? anyone got any input on that? or experience?