I have an 1954 1300 with the round style heater core which was impossible to find until I reached Classic Heaters in Farmingdale NY. I sent them a pic of my rotten core to see is they could revive it. A few weeks after sending it out it came back to me via UPS looking just like new. I was so impressed that I rushed to install it back into my truck and forgot to take pics of their workmanship. Check them out a www.classicheaters.com or call them 516-293-2175.
