[AeroModder]

I've got several tanks with the kammback on, so I'll pop it back off when I fill the tank later this afternoon and extend my lip spoiler up some.

Another idea I had was reversing the direction of delta-shaped VGs. When I was using them, they amplified the counter-rotating vorticies over my trunk, showing up on the rear glass. I'm wondering if you reverse the angles, and thus reverse the rotation direction of the vorticies, would they also cancel out the trailing vorticies over the trunk?

I have a 4'x8' sheet of red coroplast I was going to use to make a full kammback, so I might also use it to see which one works out best. My guess is that a full kammback would be better than having the gap with the trailing edge meet the slope, but the spoiler might be better than none at all (or at least better than a partial kamm on a sedan).