|
Instead of a spoiler, I'd suggest making a foam pod that fairs from the front of the cab back to the topper.
Of course, if you read further on the related threads here, you'll discover (if you don't already know) that the front end isn't where you incur most of the shape-related losses. So can you swap the topper for one that's just cab-high? And then work on the rear end?
|