Roadking53,
That is not the stock radiator. The mount someone made is not going to work with a stock radiator. The stock 6cyl. radiator mounts directly to the support between the front fenders. There used to be a member ( he passed a while back), but he had a lot of info on 55-59 trucks, including a lot on radiators and shrouds. All sorts of info on task force trucks. I think he went by Squeeze, He had an apple orchid I believe. Some one help me out here. Look in the search feature and see if he turns up. Maybe some one else will know.