Rear Air Differences in Same Model Year?

Alaskan_TA said

Pictures of the middle setup?

Places like Western Auto & J.C. Whitney used to sell aftermarket 'add on' kits decades ago.

Click to expand...

Top 2 are the middle setup with and without the vent cover. Bottom is the setup off the parts car. I haven’t torn into the gold car enough to see if it might not be a factory blower in the back yet. One side appears to be an air inlet and the other an outlet by my guess