The most expensive part in this assembly is the Tube,inner. twenty-five components are shown in this Gs400e 1979 (n) (e01 E02 E04 E17 E18 E21 E22 E24 E25 E30 E34 E39 Special Market (e4) (gs400c,ec,n:~f.no.71031) (gs400en:~f.no exploded diagram.