By the way, I used to have an SA200. The guy who owns it now chopped the shroud. May help on aero.
When I drove a gas vehicle, I drove by a vacuum gauge. The higher the better. Back in the late '70s gas crunch, I put my Ford van on a diet. My goal: 2mpg with a 36 month payback due to efficiency. Intake, headers, moderate 4bbl plus a vacuum gauge met my goal! Then again, that was from 12mpg to 14mpg!
I want to work on a belly pan. Considering fabric that can be removed such as Dacron like we use covering fabric airplanes.
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