1963-64 Tail lights
I just bought a pair from Layson's after being on a two-year waiting list, the cost was US$192 each, so by the time they landed here in Australia they cost around $600, not arguing with that, at that time there was nowhere else to get them, one NOS pair on eBay went for over US$900!
What I got was heaps better than the faded, cracked ones on the car, although the chrome rings don't fit particularly well, and when I quizzed Layson's the reply was that was how their supplier manufactures them, and they didn't even seem to take my comments as "constructive feedback", or whatever...
Not trying to rain on your party, but if you're going to do them, you will need to find out if/who anybody is already doing this, then better their quality, and/or match that price.
Also, according to SlantSixDan, you guys are already getting these lenses from an Australian manufacturer? I'll find that thread and update you.
Good Luck with the project! Here's a photo of the Layson's lenses...