Tim. Thank you. I believe you are right. I had a 53 cab that this unit is out of. I am putting it in my 48 cab and it fits fine. I also noticed that Jim Carter sells the metal tag I have and it says that it is concave and is held on by double sided tape. Not tabs.
Thank you all.
Squeeze - I am working as hard and fast as I can to get a ride in the truck. This weather is just not cooperating with my health. I am not a baseball player like Fred. He is tough as nails......