AERODYNAMIC - Model 387 Day Cab The New Premium in Aerodynamic Day Cabs Peterbilt’s Model 387 Day Cab captures the exceptional fuel efficiency and distinctive aerodynamic styling of the highly successful Model 387, and transforms it into a spacious, premium day cab configuration with a short BBC for tanker and regional haul applications. The Model 387 Day Cab is available with a choice of mid-length or premium-length hoods, and provides exceptional performance among day cabs in terms of fuel economy, serviceability and low cost of operation. On the highway and in the city, the Model 387 Day Cab provides out standing forward visibility with a dramatically sloped hood and a recessed high-intensity lighting system. Rear visibility is enhanced with an expansive 1,200 square-inch rear window area for safe and efficient operation in virtually any environment. The Model 387 Day Cab combines all the performance, quality and value you expect from Peterbilt.