I rewatched one of the first videos from this project.
I noticed the headlights it had were not SS, which have projector low beams.
That got me thinking that you might not need hard to get left hand drive headlights after all. I’m betting that if you got some SS headlights, opened them up, and removed the projector lens, there would be a good chance you could flip the little shield for right hand drive and make it left hand drive. Or you might find that a GTO projector lens fits right in its place.
Highbeam won’t be left or right orientated.
Ozeparts does an excellent, affordable set of new replica SS lights.