Hey ray...welcome to FTE... ...you might try posting in the thread titled "1973-1979 F100 and Larger F Series". You will have a larger audience with the special knowledge viewing your post.
While you're around here...why not check out the NE Threads and sign up for the Chapter...no cost or obligation. We're a bunch of guys and gals who get together on a monthly basis for some shenanigans. Hope to meet you soon!!!