Hmm..those '06 and '07 GT-H wheels look the same to me, except the '07s have the spokes painted black. IIRC, the '06 GT-Hs were coupes, the '07 were convertibles only, and the '08 Shelby GT is a consumer (not Hertz) model...coupe and convertible.
The Shelby GT hood looks like a stock GT hood but with a scoop attached (looks like the same scoop that's an option on the regular GT). I have a resin hood that I got somewhere that is a stock Mustang GT hood with a scoop, similar to the Shelby GT hood, I think.
I'm planning on getting a couple extra Shelby GT500 and Shelby GT kits, I want to do convertibles also.
With the heavily restyled '10 Mustang coming in about 6-8 months, I hope Revell tools up the '10 and has it out by next summer....and the production '10 Camaro.