I think mine is a 1979 6.5 NH, I will check this weekend. I have spent a lot of time searching for the mystery post/link with out much luck. I must have dreamed it. But the site had all of the manuals PDF for many models. It might have been some RV site that I just don’t remember anymore. Thanks for all the help; I will probably need some help with manuals. So far a $30 low psi fuel pump from NAPA has at least made it run.