chevy duty, or... as it is now known as... classic parts of america. I do not believe it sponsors the 'bolt or has ever sponsored it. I could be wrong tho'... they might have supplied some doodads for contests maybe... but American Classic(totally different website and company) usually does all of that stuff - yay for us.
American Classic truck parts @
http://www.americanclassic.com provides the bandwidth/web connection for the Stovebolt SuperComputer(thanks AC!) which is where all this stuff we are reading and what not is located.
Keep calling CPA and talk to someone else... if nothing else, tell them to put a marker/disclaimer on the part on their site and in future catalogs... many other vendors do this... 'not as original, but will work' or 'not as original, trim to fit' etc..
-W