Hal - I don't know exactally what it would be, but I have had some experiance with some of the listed cars above and I would rule them out. For me it's got to be a open car and the more tractable the engine the better.
Maybe a replica of a birdcage Maserati or a 550 Beck spyder, a Allard J2X, or if it's got to be a horse, a 250GTB spyder(oh yea).
But the one car that jumps out at me the most resoundidly(?) is a 1957 Jaguar XK-SS. Now that would be something!!!!!!!!
Could be built like a Cobra, sits on the same wheelbase, and is just simply a gorgeous car. It begs to be reproduced and boy would it be unique.
cobrashock