Research continues, and I found some more pictures of original 507 bucks.  This one was at the unveiling of the Elvis 507 at the BMW museum in Germany.  I befriended a guy that forms cowlings for vintage aircraft at my local airport where I have a hangar,  and he's willing to help me when I get stuck and want to turn my creation into a wadded up ball of tinfoil. 
 
I've got my supplies to form the buck this month and will do that when I get back.  Also bought a windshield gasket along with a blank few data tags that I need. More later this month! 
 
Cheers

Dave