Would through you back when you took off. The farmer I was around a lot as a kid ran a GMC Brigadier with Detroit 6-71 2 stroke. Which were all what they used and ran constantly.
Every farmer all had a International Load Star 1400, IH S 1400/1600, or Chevy C60/ GMC Kodiak, or GMC Brigadier 6 wheel dump trucks. Would fit a little better on something like the 60's-70's International Load Star or 80's IH S series. A solid slurry tank option with Criena 6000 litre tank. Here's the english Wikipedia page on the brand: They need to be branded Lizard or some other kind of fictional brand, as i don't know if Officine Meccaniche is still Fiat's or IVECO's property. They are some good trucks-lorries, perfect for a classic playthrough or for someone who needs a good, reliable and handy vehicle for transport.
They have the size of a modern pick-up (apart the height, more than 3 meters!). These models were avaiable with flatbed, dump bed, with coverage, in a van model (and that's not half of the list!) and they were used as ambulance, as firetruck and some were used by the military too.
It's an OM Lupetto 25, part of a series of models built between the 50's and the 70's. I see the stationary slurry and dump trucks in the Platinum add in map. Like a look alike Chevy C60 but Lizard brand. I would wonder if anyone would attempt a small matching single axle older dump truck for silage hauling.