Here are new photos of the silver dollar thick plate and the s/c inlet clean up FYI.WW

The knife edge would cause separation of the air like the original square cut butterfly plate. this is why I used a smooth rounded edge to smooth the flow a bit.

The floor of the s/c is cut to lower the lip to out of the air path and to blend it into the body better. I did not polish as that was not possible in the car and benefits would be hard to measure, that gain.

Woody