Liking the concept man, looks great, to me its got a bit of the dodge viper in there, might just be the angle of the pic but I would probaly have made the front a bit longer/back shorter, but then agin its a concept so its personal pref!

The wires look nice and clean, I really need to do a car model, not done one for ages!

The Jag emblem looks good, not too sure about its positioning though, kinda breaks up the flow of the body so to speak, maybe give it one of the standard round ones and leave that to the boot area??

As I say its looking real good, looking forward to seeing how you develop it!