The Whirlwind first flew in 1938 and was used primarily for low-level combat and ground attack.
The model has a 49” (124cm) wing span the prototypes weighing in at around 49ozs all up.
It requires 2 X speed 400 electric motors with 1 X 7 cell 2000 battery pack. This provides ample power but the airframe will accept  equivalent motor and battery combinations. Also requires a 3 channel radio with mini servos + speed controller.
The kit includes 3 part foam veneered wings and ailerons. 3 part vac formed nacelles, top deck, nose cone, fin,servo tubs and clear canopy dummy exhasts. Most parts are CNC cut or pre-shaped. Also horns quick links etc are included.