I live in Sydney Australia and have a 1964 Commer van. It doesn’t have a heater or any ventilation fitted. Would anyone know where I could purchase a complete assembly new purchase used? Thanks Mark.
I'm sure he'll be able to fix you up with the heater matrix, ducting, motor and switch etc as well. If you can't find a second hand one local to you the alternative is modify one from another vehicle like a Landrover, Morris Minor or Mini.
Good luck