b18c5 bottom end, b16a1 top end

should i get a skunk2 spoon toda something like that headgasket or will the honda OEM be fine?

i am not changing anything else yet so the engine wont be under any abnormal force, i want to get some ITR cams later on this year but right now im just trying to get my engine together and in my car.

is there a diff. between b16a1 gasket and b18c5 gasket?