There is a Shelby/CAV body and Shelby 4000 frame on ebay for sale. I've seen this body and frame and it is beautiful and a match to the Shelby 4000 chassis and body. I'm not too sure it isn't actually a Shelby body and frame, actually. It has the new style Shelby fiberglass tub and footboxes and most of the aluminum for the inner panels. All the Kirkham and Shelby 4000 drivetrain, suspension, and exterior/interior pieces bolt right up to it.
You could have a Shelby CSX style cobra for a lot less than SAI is asking for them.
No, I'm not the seller but I know the seller and he is a really good guy and very knowledgable about the Shelby Cobras from the beginning.
Check it out if you're interested. You won't see another deal like this for quite some time as this is the last one he has available.
http://cgi.ebay.com/ebaymotors/ws/eB...ADME:B:BN:MT:1