Thanks Million. We were posting at the same time. I had visited the website at "Dennis' Motorworks webpage" and looked around. I found different pics there of a 351/400 but not any schematics like the one you posted. I saw some of those on the AZ site but I couldn't figure out what was what. They didn't have any index to tell you what the abbreviations meant. I see that the other address is ford-trucks.com. I will have a look.