I talked to Fred and sent him my Challenger fan clutch back in September. I believe that number was the correct one for him. Best time to call is on the weekend.
He told me he is really backed up with fan clutches, something like 100 in process, and this is his side business. So he can only work so fast. He told me to expect 8+ months if I wanted him to do my clutch. I'm not in a big hurry and he is supposed to be the best, but I just thought you should know. If you wanted to have your part ready by spring he may not be able to have it ready by then.