One new EPC brand clutch disc (made in Japan), part number 061-1541, 25-02902, CD50003, 931240-0080.  This fits:

Isuzu IMark 1817cc Gas 1981 - 1985
Isuzu IMark 1817cc Diesel 1981 - 1984
Isuzu Pickup 2WD 1981 - 1982
Chevy LUV Pickup 1817cc 2WD 1973 - 1982
Chevy LUV Pickup 1817cc 4WD 1979