Looks like this guy lucked out by finding what could possibly be the original motor to his car.
The engine was found on e-bay of all places...The engine is owned by an older guy who lives relatively close to the current location of the Z...Unfortunately there seems to be a glitch in one of Vin number locations. Great story with a happy ending
http://www.camaros.net/forums/showthread.php?t=158069