Well, we went to pick it up, and the label said PC40-2, so I'm happy with that, as it was being sold as a 5 ton (my preference was for something slightly smaller). It was sold as a runaway diesel, and as they said that they had stopped it by cutting the fuel, I thought that was worth a shot. It had only had intermittent use over the past several years, than sat for a year when they attempted to restart it (5 months ago). Turns out the fuel rack was stuck, it didn't take much to free up, and it runs well, and loaded itself onto our truck. Thanks for the input.