I spoke with the owner. 'Bulletproofing' has not been done. But "no issues" with the engine. He is aware of what they 'list' (asking price) for. He was going to have Earthroamer do some upgrades and list it on their website, but the cost of that was far too high for him. Priced for a quick sale. Yes, he has gotten about 60 calls and there is a list of 'want to buy people'. Someone from Montana is #1 on that list, (flying out), so it is a 'get in line' if you are interested. He seems to be an honest guy, as offering him more money will not get you bumped up on the list.