When selecting a provider, ensure that all of the parts that will be installed in your vehicle are of high quality. Even if you qualify for co-financing, the production quality will not necessarily be the same.
What could possibly go wrong? Load capacities may be small for your requirements, rust protection is not provided, built-in safety equipment (e.g., seat belts or wheelchair attachments) is not attached directly to specific points in the vehicle and is thus unsafe, installed products are not certified, so conversion will prevent the vehicle from being approved...