PEM Quick Change Rear End Assembly - 5x5" Hubs - .810" Rotors - 4.11 Ratio - Centered Pinion - 60" Width Turbo Fittings 3-Pump and 6-Pump refers to

3-Pump and 6-Pump refers to the amount of pumps of the handle to lift the tires off the ground of a typical stock car

Bolt-in versions come with Bolt-In ends pre-assembled at all 5-points

Outlet Port on the Top

1978-1978 GMC C15 Suburban

Not to mention

PEM Quick Change Rear End Assembly - 5x5" Hubs - .810" Rotors - 4.11 Ratio - Centered Pinion - 60" Width Turbo Fittings 3-Pump and 6-Pump refers toManufactured using permanent mold, magnesium aluminum alloy castings, each rear includes a heat treated lower shaft, 4. 11 or 4. 86 ring and pinion, roller pinion nose bearing, and pinion posi nut. Rears listed (unless specified) include steel, . 188" wall centerless ground 2. 5" GN axle tubes, 5 x 5" 2. 5" GN hubs, . 810" wide brake rotors and solid axles. Rears with "Max" option include the substitution of a black thermal coated housing, billet rear