My neighbor has an orange 8x8 argo he says has a kohler 440 in it. Its been sitting for about 10-15 years. Its going to need new tires and who knows what else. It ran when he parked it last (according to him). We're trying to figure out what a fair value is on it (I've loved amphibious vehicles since I was a kid). He says this one has a bench seat in the front, gas tank is under the front seat, and 2 benches in the back. Its all covered up so I havent had a look. Is there any idea what the value of something like this would be?