desired 80s head

[hasa68mustang]

I am visiting the junkyard this weekend to see if I can get the duraspark distributer, and the control box, and the desired head with bigger valves... can some one please tell me what the asting code is on these heads? thanks, Tommy

 

[mustang6]

Anything with a casting number of D7 or newer (1977+)will have the big intake valves.