Topkick series is a medium-sized commercial pickup truck developed by GMC department of General Motors. Provide four body styles: single row seat, double row seat, RV and bus. Other body styles can be modified. The engine is an 8. 1 L V8 Vortec gasoline engine widely used in general trucks, with a maximum power of 325 HP and a maximum torque of about 62 kg/m. The other engine is a 6.6-liter Duramax turbocharged diesel engine with a maximum power of 330 HP and a maximum torque of 85kg·m, and the price is 27,890 ~ 41.399.