I found this info in a 2009 Old Cars guide to auto restoration. There's a company that specializes in buying & selling of engine, transmission & driveline cores. They operate out of Chicago & Las Vegas as "aamidwestcores.com   Or at 800-426-8771.  Need a core or have a core?. Having trouble selling or disposing of vintage driveline parts?  Don't send a vintage engine, transmission or crankshaft for scrap before you check with them.. (this is just for information, I have no connection with this company)  


Paul