66 GMC 4000 Radiator

[animalsservicar]

howdy folks , went to fire up the ole 4000 to haul some gravel before winter & the radiator is leaking pretty bad . I had taken it to a radiator shop a ways back & they did all they could without making it worse , well now after sitting for quit a while it's worse . SO I'm looking for a new radiator & wondering if it's the same radiator that they may have used in the smaller pickups ? That may be easier to find
thanks
animal