In all honesty mate.. if you are going to reproduce parts that aren't available then you may as well go the whole hog..1950's red 2" flipper bats although available from PBR are not as good as the original as they don't have the marbelling effect through them.. woodrail hollow posts you cant get.. in fact you cant get ANY good reproduction parts for woodrails because none have the marbelling through them..ALL are solid colour. lane guides.. posts.. shrouds.. rollover buttons.. all are a second best.
All of these parts were made from approx 1945- 1948 onwards..PBR bought the tooling but didn't faithfully reproduce the plastic as its too expensive.. 3D printing makes this possible. I say go for it  and be the first but many will follow as reproduction will soon be in the hands of many.