Odds are that car is no longer even on the road! If it is it's probably been so hacked up that a numbers matching engine isn't going to help it much. If you posted a for sale add you would probably be able to find some one with a simular car that would be interested in it!
The car was last seen in Pa. 15 years ago when this engine was removed and the automatic trans, and replaced with a LS 6 and M-22 out of a totaled 70 chevelle. So chances are the car is out there somewere. I had a 63 vette FI moter years ago and found the car it came from in Conn. made one happy guy.Hope I can do it again.