It's great that you're looking to sell your van. Overheating issues can be tricky, but with the right buyer, it could be a great project. I've worked on similar vehicles in the past and know that there's usually someone out there looking for a fixer-upper like this. Have you considered writing ambulette service new york city
? They also drive vans, bt they first remodel them inside to make them more comfortable. Good luck with the sale!