The chloroplast belly pan was sagging down about 3 inches near the gas tank where it was unsupported. It's 8 years old. I had to cut it and splice it back to rivet it to the tank shield 3 inches doesn't sound like much, but it was the lowest spot so venturi action was pulling it down.
I am still thinking on how far to go with the boat tail, reversible or permanently boogled up so the trunk lid, fenders and lights can't be put back on. This would be the lowest drag configuration.
