the Lonestar has a 132-inch BBC length (matching the Freightliner Coronado and 5 inches longer than the Peterbilt 379). The series was introduced in three configurations: a day cab, 56-inch sleeper (low and high-roof), and 73-inch sleeper cab (high-roof and extended-roof). All three configurations were shared with the Prostar (the regional-haul Transtar was offered with the day cab and 56-inch sleeper). At its 2009 launch, the Lonestar was offered with two engines: the Navistar-produced "Maxxforce 13" 12.4 L inline-6 (410-500 hp) and the Cummins ISX15 14.9 L inline-6 (525-600 hp). Both engines were paired to Eaton-Fuller manual or automated manual transmissions. While sharing its cab structure with lower-price International trucks, the interior of the Lonestar was distinguished by the use of premium-grade materials, components, and features. In place of a standard double-bunk configuration, the lower bunk of the wood-floored sleeper was replaced by a sofa bed; both front seats swivel backwards (when parked), converting the cab into a workspace. To commemorate the launch of the model line, Navistar produced a Harley-Davidson Special Edition of the Lonestar; 250 trucks were produced for the 2009 model year. The special edition received its own grille and bumper design, headlights (sourced directly from Harley-Davidson motorcycles), and custom 24.5-inch wheels (with Harley-Davidson emblems on the center caps); each example was painted with a black and silver paint scheme with orange striping. The interior received "engine-turned" trim for the dashboard, black leather, and Harley-Davidson badging in the interior. Following the discontinuation of the MaxxForce 13, the Cummins ISX15 became the sole engine for 2015 (itself becoming the X15 for 2016). 2018 update For 2017, Navistar underwent a redesign of its NGV model family (which dated to 2001), with the Prostar and Transtar becoming the International LT and RH, respectively. For 2018 production, the Lonestar followed suit; as part of the update, the model line became the final International truck series to keep its "-Star" model name. While sharing its underlying cab structure, the second-generation NGV underwent a substantial redesign of the interior, improving visibility, ergonomics, and reliability. A reconfigurable digital display was added to the instrument panel and the shifter was redesigned for the automated manual transmission. The doors were redesigned, including remounted sideview mirrors (a change that would increase fuel economy by 0.5% itself). As the hood and grille underwent no essential changes, the update was distinguished by the adoption of single-piece side windows for