Models 5.0L 305 V8 (185,225, 230 hp) Starboard dipstick with two-piece rear main.
Models 5.7L V8, 250 (215, 220, 250, 260, 270, 290 hp), 250 King Cobra (235, 270 hp), 260 (250, 260, 270, 290 hp) Starboard dipstick with 2 piece rear main bearing seal & 4 piece oil pan gasket.