After coming up to temperature, the factory radiator let go with a plume of coolant. A local radiator shop took possession of the stock unit, while I optimistically waited by the phone. After three days of searching for a useable core, I gave up and called Radiators.com. Three hours and $249 after hanging up the phone with the salesman, a Chevy conversion radiator for a '78 CJ-7 was delivered to my door. It dropped right in after slightly elongating the mounting holes.