O-320-A, -E (low compression) (Wide Deck) O-320-B, -D; IO-320-B1A, -B1C, -B1D, -B1E, -B2A, -D1A, -D1AD, -D1B, -D1C; LIO-320-B1A; AIO-320-A1B, -B1B, -C1B; AEIO-320-D1B, -D2B (high compression) (Wide Deck) O-320-H2AD, -H3AD (76 Series) O-360-A, -C (high compression) (Narrow Deck) O-360-A, -C, -F1A6, -G1A6; IO-360-B, -L2A, -M1A, -M1B; HO-360-C1A; HIO-360-B1A; LO-360-A1G6D, -A1H6; AEIO-360-B, -H1A, -H1B (high compression) (Wide Deck) O-360-B, -D (low compression) (Narrow Deck) HO-360-A1A, -B1A, -B1B HIO-360-B1A (high compression) (Narrow Deck) HIO-360-A1A, -A1B, -C1A, -C1B ; LHIO-360-C1A (high compression) (Wide Deck) IO-360-A, -A3B6, -A3B6D, -C, -D1A, - J1A6D, -K2A; AIO-360-A1A, -A1B, -B1B; AEIO-360-A1A, -A1B, -A1B6,-A1D, - A1E, -A1E6, -A2B; LIO-360-C1E, -C1E6,-C1E6D (short reach spark plugs) (high compression) (Wide Deck) VO-360-A1A, -A1B, -B1A (high compression) (Narrow Deck) GO-480-B, -D, -F (low compression) (Narrow Deck) GO-480-C1B6, -C1D6, -C2 Series, - G1A6, -G1B6, -G1D6, -G2D6, -G1E6, - G1F6, -G2F6, -G1G6, -G1J6 (high compression) (Narrow Deck) O-540-A; IO-540-C (high compression) (Narrow Deck) O-540-B (high compression) (Narrow Deck) IO-540-A, -G, -K, -L; HIO-540-A1A (high compression) (Narrow Deck) IO-540-B, -E (high compression) (Narrow Deck) IO-540-G, -K, -P, -S (high compression) (Narrow Deck) IGO-540-B1A, -B1C (high compression) (Narrow Deck) IGO-540-A1A, -A1C (high compression) (Narrow Deck) IGSO-540-A1A, -A1C, -A1D, -A1E, - A1H (low compression) (Narrow Deck) IGSO-540-B1A, -B1C (low compression) (Narrow Deck) VO-540-A, -B; TVO-540-A1A (low compression) (Narrow Deck) VO-540-C (high compression) (Narrow Deck)