Ricambi's website has parts diagrams for all models. Here's a link to their dwg. showing parts for both the single and dual disk clutches thru 1992. There's also a different dwg. for later 348s. Note that in the parts listings, the last dual disk clutch is for the vehicle with Engine No. 24980 (not VIN). The single disk started with Engine No. 24981. So you'll have to find engine number to verify what was original from the factory. Obviously, this is no guarantee what's actually on earlier cars, since many have been converted from dual to single disk by owners. http://www.ricambiamerica.com/parts_catalogs.php?M=FE&P=&V=diag&I=3083
