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Based on conversations with Joel Rosen and Marty Schorr there were VERY few '67 BM cars period. A couple of Camaros and a single Chevelle are all that are known to have been built.  In fact, I am only aware of a single documented '67 BM car that has been found.  

 Anyone know of others? 
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There is a '67 427 Chevelle with a tunnel ram and sheet metal hood scoop also, but I think it may just be a Motion only car. 
Here is a couple of the '68 B/M SS427 Chevy II