I have a 1966 F100 - A 351 Cleveland was in it - But the Engine has now been replaced with a 351 Windsor - I have Checked Summit - Ramchargers - Hooker and just about every Ford Book there is - There is No 66 Ford with a 351 Windsor or any cross reference numbers. SO here is the question - Are the frames the same on 1966 through 1979? I can find headers if I had the correct year!!! If the frames didnt chage then I guess i could use a later model year application - ANY HELP WOULD BE GREATLY APPRECIATED ........

 

The truck originally came equipped with a 352. Some folks have replaced it with 351W and installed headers but your going to have trouble as you well know now. There are some headers in Jegs that may work. Try part #289-85902 or 129-3511. Both of these are shortie headers.

 

HT, There were no 351Ws offered until the 80s, and changes had been made to our series trucks 65-79. Kenny is correct with the shorty offer.