high lift cams on ka24de

ok i was reading something on zilvia about high lift cams on the ka24de with sohc pistons. saying the valve reliefs won’t line up with sohc pistons. " Will put the valves into the tops of the pistons. The valve reliefs in the sohc pistons do not line up with the valves in the DE. "

is this true has anyone come across this. just curious guys