Jarrod contacted me via facebook and then went silent.
It looks to be 250 - 300mm long and he wanted the rods in polished brass. It is too large for 3d printing and would be super expensive = $200 or more each in polished brass.
My recommendation would be to get a hollow aluminum tube maybe from a hobby shop and tap a thread or epoxy some small pieces of thread bar and then fit a tie rod ends on each end in which you adjust the length and lock into place with some nuts.