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 gl*** 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.