The most reasonably priced component used on the Civic 5d 1200 1980 4speed M-1 Clutch Housing is the Bolt,stud,10x40.
The M-1 Clutch Housing assembly is constructed from several parts from which the Case Clutch is the most expensive.
This M-1 CLUTCH HOUSING assembly utilises three Bolt Flange 10x55(s) - the highest specified component.