 Many P-47Ds used this gunsight until the much modern K-14 Gyroscopic was available. To install, drop both files overwriting the old ones. This new gunsight does't need any transparence to it, so it can be used freely in any USAAF single seat fighters, like the P-51D for example. This gunsight also came with a pilot seat! Hope you enjoy!!																														Claudio Wilches  -  cwrio@globo.com