Cd's postings today of video from the A2 Wind Tunnel, especially
this one, got me curious and I decided to share a few I found by searching their youtube page. The first two are the more thorough, including shots of the aft areas of the vehicles. The tunnel does a lot of race cars, of course, but these are "stock," roughly.
A 1971 Dodge Daytona (beginning 2:10 they test back end and spoiler):
71 Dodge Daytona - YouTube
A 1971 Plymouth Superbird (front wheels at 1:45, beginning 2:14 back end):
Here are two series of tests on various Vettes, and I found it interesting to see how the hood interacts with the windshield on the various models: