I have a set of 1968 Ford GT 390 Heads these were my grandfathers he had them rebuilt a few years ago for his 1968 Mustang GT all the parts look to be new and I know the machine shop did valve guide and seat work to them he was restoring but he did not get a chance to finish before he passed the car is gone now these heads are left over the date code is the same on both heads 6 H 12 the casting numbers are C7AE-A if you know Fords than you know what your looking at, they have been wrapped in plastic until recently when I took the pics we would like to see them go on a classic mustang if you can use them here you go buyer pays all shipping UPS Ground