1978 marked the introduction of the 350-cubic-inch V8 diesel that was optional on the C10 two-wheel-drive pickup. Playing catch-up to the Sport package offered on Chevy pickups the year before, GMC brought out a very similar package, called the Street Coupe. GMC also introduced a rather garish Desert Fox package (for four-wheel-drive trucks) that featured a front brush guard, a bed-mounted rollbar with lights, sporty wheels, and a heavy-handed tape-striping job over most of the body.