Ok, here is what I got. From what I understand, the book says all models 50-55 are the same except for the tail pipe. 41-49 has a different exhaust pattern, I don't think he could find that card, but he did find the tail pipe card for 3/4 ton. I will send that to Denny Graham via email. Unfortunately, they didn't have a 1 ton tailpipe card.
