Winglets and bumpy paint?

[kitcar]

The canards in front of the front wheels works. I notice the most difference when in traffic. What I've done so far retains the mpg at higher speeds. It's installed just above the air dam. I'm debating the same thing in front of the rear wheels, the pre-2000 wheel wells (the pre 2000 Dakota had an aero fender flair front and rear that extended the wheel wells past the tires) or a combination of disc wheel covers and a rear skirt. Figure $10 for canards, $300 for the flairs and $200 for the disc/skirts.

My issue at this point is that everything I've added (with the exception of the side skirts) is attached to the front bumper fascia which is plastic. Now I'm faced with drilling metal which is rather permanent in "damage".

I'll have video of the canards in a few days; I'm going into post-production of my next episode this weekend.