There are LOADS of posts on other forums and a few on here menitoning using car radiators for cooling given they cost £100 and cool way better than any watercooling specific radiator its stupid not to try when your car radiator is being replaced for a shiny one 
The problem here in is the connections. They are huge and no-one ver mentions how they got theirs to work. I'm currently building 3 PCs and think this would be a good laugh to try on one once up and running. Does anyone know where I could get connections from normal rad pipe 1"ID ish to 1/2"ID?

The problem here in is the connections. They are huge and no-one ver mentions how they got theirs to work. I'm currently building 3 PCs and think this would be a good laugh to try on one once up and running. Does anyone know where I could get connections from normal rad pipe 1"ID ish to 1/2"ID?