1968 Airbox rebuild question

I had already ordered #3 from Classic Industries. Took some work but I seem to have it in. I will keep the one I took out, the root beer burper (I ran water through it, root beer came out, it went clear, emptied it, and back to root beer. That said, I still plan to have it pressure tested and kept as a back up. Still have the Spectra one that was never used.