I would like to know a little bit about AC HD3 bulldozer. Is it reliable, any problems I should be aware of. Are parts still available for it. I have 5 acres, 4 of which is open fields. I have built a hous on it, and I need to do some landscaping. Their are goffer holes, rocks, ruts etc. There are two on ebay, diesel, about $4k right now. They seem to be fair condition. What are they worth. Any info would be appreciated.