I am pretty sure Champion custom made a radiator for TJones, at a reasonable sum. I'll bet they can make it mount up the way it was intended.

I would hate to see the old radiator leave you stranded. Most of the time they are going to cut and solder the leaking core tubes. This reduces the radiators ability. Like LarrBeard said, finding a shop that can really clean them any more is tough. All the new stuff is plastic, aluminum and glue. I did find a mature shop that has been around since the early 50's. He said he would be glad to help out but, he could never get close to the Champion price. When you repair an old core that is starting to fail, it usually fails somewhere else shortly after you fix it. He said the best thing to do was have a new core made. Upside of $500.