Hi Derek,
I seriously doubt that there will be any effort to match the original body shape from the 427 body.
However, below please compare the Shelby 4000 series and the JBL profiles.
Also, please look at ERA's comparison page of various manufacturers.
car profiles
It seems to me that the cars are all over the lot as far as shape goes.
I guess that the photos on the ERA site just prove that everyone has a different opinion on what is a "correct" or "Classic" body style.
The JBL is different from the pack, and I feel that the car is best described in the words of Jessica Rabbit.
" I'm not bad, I'm just drawn that way."