The 428 Cobra Jet can be regarded as one of the greatest racing engines made by Ford. The 428 CJ was also present in 1967 Police Interceptor cars and also the Mustang GT500 (EXCEPT for the KR). The intake should be stamped as C7AE-9425-F.
Again, this intake would come on all 428 Police Interceptors and also all GT500 Mustangs (Except the KR) in 1968.
The intake manifold is made out of aluminum. Finding an unmolested one is difficult due to the rarity of the intake. We have seen prices range from $500-$800 from various sellers.
See some up close detailed images below. Please note the non-painted intake has some damage.