The two bolts that hold the toolbox to the cab also hold the top of the gas tank. Remove the toolbox and the tank is loose except for the fuel line underneath the cab and the fuel filler and the wire on the sending unit.
Screwdriver and open end wrenches will do it in a pinch.
Your vin will tell you the year. F1R1 is 51. F1R2 is 52. Your hood spear is '52.