Frank,
I am assuming that the units are left hand or right hand specific given the different positions of lots of the components under the dash and the instrument cluster.
Garry
Gary,
I figured I would get a question like yours from a RHD owner. Since my car is LHD, I will be setting up for that configuration. When I started this project, my thought was to modify the original Vintage Air evaporator/heater core housing. Since then,I have decided to use their core but fabricate my own outer housing. The stock Vintage Air housing configuration would be better suited for a RHD W113 since it has the evaporator connections on the left side of the transmission tunnel. I soon realized I could flip the evaporator core so the connections would be on the right side of the tunnel which is better suited for LHD car.
So in answer to your question, I do not anticipate a problem with creating a system for the RHD cars but I need to know a few more details such as confirming that wiper linkage is the same, and the center of the radio/heater controls is the same. Interestingly, the radio/heater controls are not centered on the top speaker grill or the transmission tunnel.
BTW, my son leave for Sydney tomorrow. I just picked up some breathing masks for him in case he has a problem with the fires. He will be studying at a University for 5 months.