I have some spare art for MS1 MVS. I don't know exactly what I have, but its in decent condition. I am about 200 miles away from home right now, so cannot check, if you can wait a bit until Weds/Thurs I will PM you exactly what I have.
Looking at the cart kit picture at neo-geo.com I think I have the bits your looking for x2. So I can depart with one set.