Gecko,
I learned to drive in 2 ton grain trucks unloading the combines and then driving them to the elevator to be unloaded. I was 10-11 years old and had to go through town to get to the elevators. Anyway, the dump type trucks were dumped into a small grate that augered the grain into the elevator. The trucks that did not have a dump hoist were driven onto a hoist that actually lifted the front of the truck high enough to let the grain slide out the side gate. I have seen 1 tons set up this way, but yours is the first 3/4 ton I have seen. Probably a homemade farmer job. Have a great time.
Ralph