IF you had all the parts, it should not be a problem. There is one guy, perhaps on here, who has a hybrid door set. Clamshell upper. With cut down barn doors on the lower half. Not a bad setup at all.
You will note on a clamshell burb, that there a 4 "plugs" which cover the barn door hinge positions in the body. I don't have a barn door burb, but perhaps someone can verify that the same size plugs are used in the lower valance to cover the lower hinge holes of an unused clamshell?
As to clamshell parts, the retractors are still made by the Pullman Company so they can be purchased brand new. The cables can be made up easily. Just some steel ball ends on the right length cables. I can't confirm this, but I think that the early Corvette hood props are the same as the upper props on the clamshells. The originals do show up on eBay from time to time. Then you need the doors, glass, proper swinging taillight, latches for the lower gate and the catches they need attached to the body. And some weatherstrip and such and you'd be in business.
Last edited by k10; 06/27/2011 11:55 PM.