Does anyone here know if the Morette twin headlight conversion is availible for Left hand drive? If so, whereabouts can I get them?

Are the beams not adjustable?

They are on my Sti-v so you can manually point the beams wherever you want them to go via the beam adjusters on the back of the unit....

If it's for a classic, they will be available, but would only be to order in the UK. In Europe, you will get them from most car shops specialising in these things, as they are made in France I think.
Alcazar

They are available labelled TG (Tournez a gauche) & TD (Tournez a droite) refering to the way the lights point.