Believed to have been originally equipped with the L30/M20 performance combination Currently equipped with a 302-cubic-inch V-8 engine built with numerous Z/28-specification components Upgraded Muncie M22 Rock Crusher close-ratio four-speed manual transmission GM 12-bolt Positraction rear axle with 3.73 gearing Equipped with 11.0:1 compression, domed pistons and a forged #1178 crankshaft GM 2.02/1.60-inch high-performance cylinder heads Retains a rear brake proportioning valve consistent with the L30/M20 performance package, per the previous owner