The transmitter you select must be a DSM2 full range (high power) Tx.  The following is a list of some of the DSM2-equipped transmitters that are appropriate for the P-51D Mustang:

Spektrum DX5e
Spektrum DX6i
Spektrum DX7
JR X9303 2.4
JR 12X 2.4
E-flite HP6DSM

All Spektrum aircraft modules are also compatible. 

The most successful fighter of WWII, the P-51D Mustang still thrills thousands today in air shows and air races around the world. Now anyone with a DSM2™ aircraft system can experience Mustang thrills on a smaller scale with this fully-aerobatic, brushless-powered Bind-N-Fly™ reproduction from ParkZone. And getting it airborne is about as simple as it gets. Just attach the wing and tail, charge the battery, bind the receiver to your full range DSM2 transmitter and you’re flying.

Victory rolls, Cuban-8s, Immelmans—ParkZone’s P-51D can do them all thanks to its powerful 480 brushless outrunner motor and semi-symmetrical airfoil. The paint scheme and decals are an authentic reproduction of the actual markings from “Gun Fighter,” a P-51D that regularly flies in airshows around the country. You even have the option of adding a 4th rudder channel for extra maneuverability (requires an additional servo, sold separately).