Yeah, its simple. Just get the fixed version of the RV mod ( https://www.beamng.com/threads/rv-upfit-for-gavril-h-series.42583/page-53#post-1487654 ) and just apply the RV upfit to the van. Should work with any mod like this
Waiting the config ambulance and euro police and a brazilian ambulance skin sample but cool Nice work into the mod
I recommend using Austen's Parts Pack with this mod. It provides a cut body for the H-Series that way it's more realistic.