Simon, because there never were many early Pantera (300?) or Mangusta (402?) ZFs, they are rare as can be. Virtually all internal parts DO NOT INTERCHANGE with much more numerous dash-2 ZFs. Synchros, bearing sizes, gear ratios, limited slip & the diff design are all completely different. Parts are rarer- even Lloyd Butfoy at RBT Transmissions has very few spares. Many are snatched up by continuation GT-40 owners, who are now forced to use converted dash-2 ZFs in their million-dollar cars. This Forum is a good source. Good luck-
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