I have a leaking , probably original,radiator on my 1955 Special. It got me to Springfield and back last year but I don't figure it will heal itself. Identification on the top is: Harrison 3131175 55D R21. The top shell is kind of dented up so it seemed like a good time to improve reliability and appearance by getting a new one. There was a thread from 2013 on the topic and Walker Radiator Works seemed to be highly though of by one contributor. I located Classic Radiators in Farmingdale NY. They look good from their website. I was just wondering if anybody has any words of wisdom as to what I am contemplating and any experience with either of these two sources, or perhaps others. Thanks, Brian