| For those looking for updated look, I think you've hit the mark on this. Nicely done. However, I think from an aerodynamics standpoint it's just another bodykit. This is a moot point because unless someone placed a large sheet (metal or composite) over the bottom of the car, any attempt at a diffuser would fail due to all the turbulence from the underbody of the car. For those who don't understand, I'll explain a bit. If you can consider the underside of a car as a flat sheet, then the air moving under the car drops in pressure and accelerates. As this flow rejoins the flow on top of the car (at much high pressure and lower speed) turbulence ensues. The idea behind a rear diffuser is to create and expanding nozzle behind the car for this air. To do this most diffusers have an upward slope and vanes to help divert the air to a position directly behind the car. Here I think the TwinZ rear diffuser misses the mark. It could actually be functional if it ate up more of the bumper (in a vertical fashion). Of course then you'd have to deal with the rear tire well getting in the way. I do like the vent under the license plate. With that there and some gills under the car you can draw air over the differential (thereby allowing an underbody tray to cover the differential). That being said, I like it's looks. I don't think it detracts from the Z's lines and I think it'll sell.
"The 300ZX Turbo is a dance; it's a song; it's rolling, roaring automotive art. There is no color that doesn't suit it. There is no mood-lifting chemical substance it can't replace." - Automobile Magazine
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