I got bored and started playing around in MS Paint and came up with sweet custom 1951 Chevy. I added a 1956 Corvette front wheel opening and side cove as well as the front tip of the Corvette front fender. I used the slanted tail from Cadzilla. For taillights I'm thinking custom light bezels to look like 1965 Buick Riviera hidden headlight doors, with red glass behind the fins. Up front I'd go with 1951 Pontiac grill trim with a 1951 Buick grill.
You should take that to the next level by doing it in 1/25 scale. Has potential to be pretty nifty! Dave
Here is a couple of pic's of a Chevy that we did a speedo calibration on with kinda the same theme. Coves were painted in but I still thought is was cool.