i believe youhave to remove the cam and hang your timing chain to the side with a string or wire so as to not drop it in the motor. then remove the complete head, cuz i believe the studs would get in the way of you dropping the head gasket down because they run straight thru the cylinder and head and you have 4 nuts and washers that go on top of the head cover/valve cover. so yes you will have to remove your head to do this.
1985 KXT 250 Tecate - kx cylinder, kx ignition, bassani headpipe, answer silencer, v-force reeds, 38mm airstyker carb, +2 franks swinger, raptor rear shock.
1996 YSF240 Blaster - maxxed out!!!
Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting "HOLY SH-T, what a ride!"