I have a friend that works making shapes with methacrylate, so I'll ask him if a tube similar to the one in the movie can be done. About displaying it with or without the liquid. Mostly, I want the bottle empty because with time, the liquid may degrade or tint the acrylic plastic; but that doesn't mean that I don't want to fill it sometimes to take some photos or drink from a "real" Pepsi Perfect. After that, a little bit of water to get rid of any pepsi left, and back to the display.
EDIT: Ok, watched the scene again and now I know how I will display the bottles (or try to). I'll make not the complete table, but a square portion of it with the disc with the Pepsi Logo like the ones in the 80s Cafe of the movie (where the tube with the Pepsi is lifted) and that "white with little black worms" pattern around it. So, picking a wooden table and carving an angled hole in it, applying a vinyl pattern & Pepsi sticker, and then making a hole in the second P of Pepsi, so I can put there the plastic tube with Gary's Pepsi Perfect in it. The rest of the bottles will go on the Pepsi wooden disc.
That's what I'll plan to do. I really think there is no better way to display the bottles
Again, ANY helping with measures of the circular Pepsi disc, the plastic tube, etc, would be highly appreciated.
Here is a very rough composition I made quickly with Photoshop. (I have better skills, but not much time right now

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