[jray3]

I've been wanting to add a partial kammback, fastened to the liftgate in place of the black plastic trailing edge that comes stock. Make it of clear or tinted lexan or acrylic to not interfere with vision too much, and end it such that it sticks up no higher than the bottom of the liftgate does when raised (to not hit the overhead door, for example).

Re: raising intake air temp- what's the point of diminishing returns? Cooling intake temps increases volumetric efficiency, since cold air is denser, that's part of the theory behind water injection; it cools the intake charge and also adds steam expansion.