Unfortunaly, there's nothing in the vin that will tell whether it came from the factory as a Cameo. One thing I can thell you to do is to get an assembly manual. This will at least show you how it is supposed to be put together, especially the peices that are cameo specific. If those parts are there and installed correctly, good chances that it's the real thing.
On the engine, is it a 6 or an 8? A 6 will have the serial # on a pad directly behind the distributor.
