I haven’t heard “Ute” used much in America except to refer to the Native American tribe. I’m not sure what the official word for a car-based pickup would be, but colloquially people have used the suffix -amino as in the Chevrolet El Camino. So if someone chopped the roof off of a Volvo station wagon and made it into a pickup it would be a Volvamino.
If you want to look on the bright side, if you can replace the head gasket yourself that means you’re capable of pretty much any other repairs that might come later