Thanks Byron, I believe it to be geniune. It is a Pagewood car and you are spot on with the original engine number, I managed to track the original number from NSW registartion records. I dont think I will ever find the original motor either. The stamped number on the firewall is definately 26200-S and with the large heavy stamping it is clearly legable. The glove box tyre placard is 9930173, if that means anything?