Subject-to Investing

I’m currently coming across several homes where the people still owe money on them. For example, a lady contacted me yesterday and she’s owes $7,000 on the home to Green Tree. I’m familiar with subject-to investing on regular homes, but I’ve never heard of anyone doing it with mobile homes. Is it possible to do something similar? However, I’d prefer the loan still remain in the owner’s name until it is paid off just in case the owner decides to not pay the mortgage on the mobile home. Thoughts?