If you want better headlamps have you considered new modern high quality conventional design semi-sealed units.
They should be better than 20 yo OEM lens/reflectors, and are certainly vastly superior to the old sealed beams fitted prior to '92, but with these you only get what you pay for.
I fitted Hella units with high quality lead crystal lens/reflectors.
Hella part no 1043, combined with Phillips extreme vision +100% globes - fantastic lights!!
I have found that not all mr2 owners realize that modern headlamps have a sharp cutoff on low beam with the beam rising to the left to eliminate blinding oncoming drivers, and to illuminate signs, pedestrians etc.
However with lens/reflectors in LHD countries the beam rises
on the opposite side so don't buy these from the US or Europe - safer to buy in Aust.