Head Gasket Daihatsu Charade 1.3cc Auto


Hi. This is my first post in this forum asking for help.

My Charade 1.3cc auto 97. is emptying the water from the radiator and there's a lot of white smoke so I assume from the forum that I have a head gasket problem. Also the oil is brown and creamy like mayo. I have spoken to several mechanics and they said that there's a big percentage that there is a crack in the block. Is it common in these type of cars to happen? If this is the case, can I send the car for a head gasket repair and then use holts wonderwelder to seal the crack?

Please guys give me a hand here. Appreciate any help.