Steve, just spoke to Gavin Bain who informs me that the car was built twice - first as the Morrie with steel wheels and then secondly as the Morrari on the Ferrari chassis. He was adamant of this and tells me that everyone else has it quite wrong. So I dont know what to make of this all now as he assured me that when he bought the car from Garth Souness it had the wire wheels on it and all.
Perhaps the wire wheels were fitted back onto the car and the wide steel wheels were taken off it.