Here is what I did for the rad :
Had it steamed, and then took about 5-6 hours, straightening the fins back… with a small flat head crewdriver, and a par of bent long nose…
Then I had the Original ATAC mechanism, all cleaned out, and every thing seems like its there… I am only missing on side of the ATAC ‘‘U’’ shaped bracket, and they could bue fully operationnal… But Meanwhile I have the non-ATAC spigots , and block off plates, to get the bike going…
Had some of the best expansion chambers re-done, welded, and powder coated;
The powder coating is actually a refractory paint ( Black wrinkle satin finish…)