Sounds like an opportunity to make a DIY kit and sell it for around $1500!

Mark Drillock wrote:

". . . It looks like the retail parts cost for the whole new system would be
about $800, dash unit, compressor, fittings, hoses, condenser, dryer, etc. I
may decide to spend $600 more on the special tools to make my own hoses from
the parts since I will want to duplicate the effort on several vans."

Mark