lol... think of the flow rate and pump you'd have to use to make a coolant radiator work.. not to mention the fans! i got my camaro's new radiator for like $120... but i have accounts at local parts stores. 'course, if anyone is interested, i have that barely used radiator laying around. the problems with junkyard cores is they are often beat up pretty bad too, from bugs or just being banged around. the labor in restoring that seems too much to me to just buy a new one
now, if it was a classic car i was restoring cocours-correct, then i'd probably spend the time and effort to restore a radiator that can no longer purchased