i have a 1977 HIGHBOY with a 351m and i cannot find headers anywhere for it, build date is 12/76 so it is a real highboy, and all the headers i can find for 1977 f250 351m are for the lowboy, 1977.5-1979...if anyone knows of any part number that would fit my truck please help me, or if anybody has any used ones theyd wanna sell too.

 

I suggest ya subscribe to this thread since the OP asking the same question....https://www.ford-trucks.com/forums/1...0-headers.html