Overview: To faithfully recreate the motor and drive train layout as much as possible of the full-size car, this kit instructs the builder to assemble the chassis in the short wheelbase, midship rear motor / rear wheel drive (MR) setup. This layout configuration provides rear wheel drive handling excitement at every turn and exciting throttle response. About the Porsche 911 RSR 2.8: The Porsche Carrera RS 2.7 is a legend of the Porsche 911 series. Developed to join European GT races in 1973, it employed a 2,687cc horizontally opposed 6-cylinder engine capable of 210hp, a lightweight body with improved aerodynamics, and wide rear tires. The Carrera RSR 2.8 racing version increased displacement to 2,808cc and output to over 300hp; in 1973, it was a European GT race champion and took numerous global victories. About the BT-01 Chassis: The 2WD BT-01 chassis gives the choice of two types of wheelbases, and front-or rear-wheel drive system. Without removing the battery pack, motor, and R/C equipment setups from the center frame, simply change attachment directions of final gears and steering linkage to switch between front-and rear-wheel drive; front (FR) or midship rear (MR) motor position can be chosen for rear-wheel drive cars. The 4-wheel double wishbone suspension features symmetrical structure and friction dampers. Unitized sections such as the motor mount, final gears and suspension facilitate ese of assembly and effective maintenance. Features: The form of the Porsche 911 Carrera RSR 2.8 is realistically recreated in lightweight polycarbonate. Silver color wheels (front: narrow, rear: wide / rims and red wheel caps are separate) are paired with racing slick tires. Separate molded plastic part recreates the side mirror. Includes 540 brushed motor and ESC