I am a newbie to this forum but long time owner of Roadster and L320 Trucks
I recently found a source called Clauss Studios in Hesperia CA that will pretty much reproduce any lens. Greg produced a clear L320 lens for my 1963 L320 Truck as well as the rear tail lights all 4 sections. Prices are reasonable considering they are NLA and Greg is a real nice guy. I actually had him duplicate the front tear shaped turn signal for my 1969 Roadster as well. Cost was only $68 for the pair plus standard shipping. I ordered the parts on PayPal and he sent within 10 days. Prices are listed below, if I could figure out how to post an image I have pictures. Easy to picture on your own, they are duplicates of the originals.
I just thought this was pretty cool so I am passing along; especially for anyone that is having a hard time finding something for a restoration.
7555 3rd ave
Hesperia CA 92345
Datsun NL320 Front Turn Lens Clear or Amber Pair-N40 $79.00
NL320 Tail Light Len set of 4 $129.00
Datsun Roadster 1969 Tear Drop Lens Amber Pair - $68