67 442
#3
Another way is to remove the inner rear passenger courtesy lamps. The Cutlass models had a decorative emblem on the outside of the car. There will be a spot (Hole or filler) that you can see when the light is removed. If there is hole/filler it is/was a Cutlass. The 442 did NOT have this emblem, so no hole.
#6
A 442 has two fuel lines factory but so does a turnpike cruiser. Either way factory 400 E block both would have two fuel lines. A 330 car would not. If the car was built in Lansing it would have the 5V code on the cowl tag if Fremont then no 5V and harder to tell.
#7
67s were also built in Framingham.
#9
67 Cutlass Supreme cars had on the C pillar the C/S emblem. this was not there on 442 cars. If you suspect a car is a clone take the inside dome light lens off and the two screws that hold it in place and look inside the C pillar. You can see if the holes from that emblem have been filled. If they have been filled it could be a clone and not a real 442.