Just went through this on my buds 68 Coronet RT Convert
Performer RPM Intake - Intake fit fine , valley pan only
Then tried two of the four gaskets supplied in kit Still fit fine
Then tried all four gaskets - No go , bolt holes wouldnt line up
So i used the two gaskets on the head sides only
Works great - Couldnt of worked out any better Like i stated in my first post , let the intake dictate gaskets or not - Especially on aftermarket aluminum intakes
1971 Dodge Charger Superbee 2011 Ram Sport 1500 Quad Cab Deep Water Blue Loaded Siberian Huskies