[Coroner]

mackerel,

Certainly understand needing the flexibility out in the real world. It is still possible to get that conversion area handled by using the back of the cab. Look at the semi-tractors and take the rear of the cab fairing idea with a little upgrade and flair to push the air out past, or at least to the edge of the side skirts. Even if they don't touch, pushing the air out to the edge will smooth out the transition the air goes through right behind the cab.

I've worked with stake trucks, too. You could mod this and still not interfere with the flatbed loading area and all of it's configuration demands.

It still comes down to dollars and cents as well. Would making the behind the cab mod actually pay off? I don't know. It's something to think about though.

Respectfully,
Mark