welcome!
What you have is a hodgepoge of trucks. The cab is 1948/50, the doors have 1952/55 door handles, the rear bed is from a 1955/66. I can't see the casting number on the engine, but if it has a gmc valve cover, most likely a 228. The hood ornament is 1951/2 Chevrolet passenger car and the emblem looks like it may be from a 1952 Chevrolet passenger car.
Does the speedometer go to 80 MPH? Does the temperature gauge go to 220 Degrees? Does it have a general motors truck stainless trim above the radio speaker? is there a date code on the radiator? Show a picture of the firewall, the engine, the metal body tag on the inside drivers door post and we may be able to help you a little more.
