Ive got a couple dozen of the 60 thru 66 trucks. this is the only half ton Ive ever seen with a factory granny four speed. I got several 3/4 tons with the granny 4 speeds. Its quite common for the GMC,s to have the rear leaf springs. But not all GMC,s have rear leaf springs Ive owned a few GMC,s with rear coil springs. I like the rear leaf trucks because you can easily install a 73 up 5 hole rear and get taller gears. you can use the whole 73 up front assembly and upgrade to disk brakes also. Ill probably use the truck like it is for a firewood hauler woods truck this winter and part it out next spring.