Edelbrock casts the intakes for MoPar with the MoPar logo on it.
There is actually no after market 6 pack intake. There all basically the same intake. One will say Edelbrock and the other says MoPar.
So that basically leaves 3, the OEM, Edelbrock and the MoPar labeled intakes.
Casting variations happen. There has been no known or publicized updated designs since it has all ways been a known Excellent performer.