If your reflectors are good, go looking for used RHD lights at a wrecker's. Any old crap will do as long as the lenses are intact.
Now you have to do what the 500D owners do. Carefully cut thru the glue joint between the glass and the reflectors and swap the old RHD glasses onto your good reflectors or buy new ones- New LHD lamps are so cheap !
You just have to get the correct glue and be careful to align things and wear rubber gloves so you do not leave corrosive sweaty prints on the reflectors.
You can cut the old glue joint with a dremel or dimond disk and beware of the dust !
Fiat 127 used the same lights as I have read, did some versions of the 128 (in limited countries)