Interesting read on Motor Trend back in 2007.
Car Aerodynamics - A2 Wind Tunnel - Wind Camp Tech Theory
https://www.motortrend.com/how-to/car-aerodynamics/
In the picture part of the write up.
https://www.motortrend.com/how-to/ca...f-f637f485b165
Just adding the grill block and front air dam the Cd went from 0.497 to 0.337.
Amazing!!! Then adding the rear spoiler that mimics the HRM SPL Camaro dropped it to 0.292.
https://www.motortrend.com/how-to/ca...f-32e73ab5a2b2
The HRM SPL Camaro tested at 0.201 Cd.
There is hope for my Camaro after all.