[iplaydat]

I have several of the recently published Mustang books that go into quite a bit of detail regarding the redesign of the 2005 Mustang(a sweet read!). Currently these books are in storage while I am moving, but I do not remember reading anything about the Ford engineers taking any design cues from any other cars other than the Mustang. I will look again when I am moved in, but if my memory serves me, the engineers gathered up all the Mustang designs from past years, and pretty much made a compilation of the best features and most popular models, while also adding in some new flairs of their own.

From those pictures of the Astin Martins, it looks like the Astin Martin not only copied the Mustang, but also took some hints from the '69 Camaro.