John,
To be honest I have never heard of a Kellison until now, learn something new every day! One of these bodies on your frame with new Corvette parts sounds like a great project and something that is very achievable.
I looked on line as well at Kellisons, and like the J4 with the single round headlight a bit more than the dual round light setup on the J5 ... but both of them look better than the single rectangular headlights on the black car referenced above ... just my .02
http://bringatrailer.com/2007/11/21/...-j4-j5-coupes/