The Dynaflite is a kit with 89 inch wingspan and a Saito 120. The Mustang is an ARF with a 57 inch wingspan and an OS 70. Here is the link to the Mustang: http://www.theworldmodels.com/p51mu.htm
Mine is the blue version. Here is the Miss America version. This one is a club members: http://www.mempropbusters.com/gator51.jpg His has a Saito on it.