Guys, I hope you can help. I inherited my father's 1965 GMC 4000 with a 305 C V-6 4-speed, 2-spd rear axle. The radiator has begun to pour coolant. I removed it , and the repair shop tried & it is too rotten to repair. It is the original radiator, Harrison is embossed on it, but I have not been able to find a # anywhere. All parts houses and GMC dealerships have not been able to help find a replacement radiator. Can anyone please steer me in the right direction to find another radiator? Thanks, dyna