sentences:  Along with the Dragfoiler roof spoiler, the option package included body extension panels between the cab and trailer, an air dam below an extended bumper and an optimized radiator grille.In a major change from precedent, when introduced in 1969, the Astro/Titan were marketed exclusively with diesel engines.The base engine was the Detroit Diesel 6-71N, with the Detroit Diesel 8V71 and Cummins N-Series diesels as options.