30GS 3.0L in-line 4-cylinder (135 HP), 43GL 4.3L V-6 (160 HP), 43GI 4.3L V-6 (180 HP), 43GXI 4.3L V-6 (210 HP), 50GL 5.0L V-8 (220 HP),50GI 5.0L V-8 (250 HP), 50GXI 5.0L V-8 (270 HP), 57GS 5.7L V-8 (225 HP), 57GS 5.7L V-8 (250 HP), 57GSI 5.7L V-8 (280 H