I have an opportunity to pick up what I believe is an HT4 track loader. It is about 3000km away and has been sitting 20 years. It has no track chains or idlers. It is believed to be covered up. I would have to set my sights low and expect to do a lot of work obviously but it is free for the taking. Also wondering what is the difference between an HT4 and a early 955? Any thoughts?