[Carleen]

From CRG

The COPO 9560/9561 cars started with a SS396 big-block chassis that included:
• Rear Brake Proportioning Valve
• Big Block Heater Core
• Big Block Fuel Line
The price of the COPO 9560/9561 High Performance Units included the following: • Either ZL1 (9560) or L72 (9561) engine
• Dual exhaust (both standard N10 and NC8 chambered have been noted)
• ZL2 cowl induction hood
• Transistorized ignition (9560 only)
• HD (curved-neck) 4-row core 23" radiator (most)
• F62 HD front springs
• G32 HD rear five-leaf springs
• HD version of the 4.10 or 4.56 ratio 8.875-inch 12-bolt rear axle

• G80 positraction
To this was added the following mandatory equipment: • J52 Power Front Disc Brakes
• Either Muncie M21 or M22 4-speeds, or THM400 automatic
• PL5 F70x14 white letter tires on 14x7 wheels (or equivalent substitute option)