OT: General questions re: Cylinder head gasket (I hope)

From : ed

Q: this group has some great specific information regarding dodge trucks that i have used well and contributed to when i could and i hope will translate well enough for my 1998 isuzu amigo 2.2l its a gm engine. problem i didnt notice the coolant temperature guage until it was into the red line stopped found a ruptured radiator hose replaced the hose filled with water and noticed a white vapor and gasoline smell from the radiator when the engine was cool and running. oil dip stick doesnt show signs of water. engine starts easily when cold and warms up faster than normal i havent started it when warm question in general besides cylinder compression tests what should i look for to determine if ive wrecked the engine or if i only need to replace the cylnder head gasket .