Very cool project. The shortened body and lengthened doors give it a really sporty look, kinda like an early Thunderbird. To my eye, the modern windshield looks a little akward but it's hard to tell without the hood on. Have you considered chopping down the height of the windshield? It seems like a 1/4" would make the whole car look sleeker, especially if you try and imagine a top on it. It would also pull the ends of the windshield posts away from the passengers and (if it were a real car) ease entry and exit.
I also think some chrome C5 ZO6 wheels would look cool. If your gonna do the steel wheel and stock caps consider some wider wheels and wide, low profile Z-rated tires for a nice retro look. It would be a shame to put all that great handling modern suspension under the car then have it handle like garbage because of some tall, narrow, bias-ply tires. (If it were a real car.)