[coyoteX]

Sven7, with the tail on from the side it had a tadpole look, besides my grandson likes the name. I try to be effective with whats available. Never have cared what other people think about what my car looks like. The main aluminum plate, that attaches at the license plate mount and to the suspension frame underneath was free. There is a piece of 1x1x1/8" aluminum angle bridging the corners of the bumper cover and center plate. The cover is 1/8" haircell ABS. The diffuser is just formed with haircell ABS. Total cost maybe $100. It works what can I say.
MetroMPG, you are absolutely correct, it did create 2 counter rotating vertices behind the car. The length from the tip of the tail, over the top to front bumper was very close to the length under the bottom. It also made using the hatch useless, so I took it off and went a different direction. By focusing on the front and bottom, visually to most people, it is not noticeable.
sheepdog44, I used drywall bullnose corner bead, it makes a nice smooth rounded edge, its cheap, light weight, strong and easy to rivet. The panels were made out of coroplast. I attached it to the bottom of the bumper cover and the the side of the body just inside where the rear hatch closes. The hatch opened and closed fine, its just that you had to reach over the side to get anything in or out of the car. Sorry, No build pictures. I did that like 3 years ago.

Whats important with front air dams? The farthest point forward has to be the lowest point on the car.

The car really is a blast to drive, especially on raods like HWY 550 north out of Durango, "the million dollar road". With those skinny tires it drifts very controllable if I push it. I put drilled/slotted rotors on and can easily over power the tires on hard stops. It don't go uphill fast but I don't have to use my brakes much coming down, HAHA. Thats the trade off for fuel economy.

Thanks for the interest guys