Note to Pixelmon Devs: Please don't patch this
Step 1: You are going to need the Ingame NBTEdit mod to be able to use this.
Step 2: Place a Fossil Machine and insert any kind of fossil. Then type /nbtedit while facing the bottom half of the machine
Step 3: Change the FossilProgress to 1600 and PokemonProgress to 3200
Step 4: Change CurrentPokemon to whatever Pokemon you wish.
Note: Each Pokemon will behave differently. Some will be very small, others may be centered very low. You will have to experiment!
Thats it! Well... Sorta. Your statue is still tiny. Now we gotta blow it up a whole lot.
Step 5: Use /nbtedit on the bottom block again
Step 6: Change PokemonOccupied from 1 to 0. This will stop Pixelmon from updating the Machine and will keep your Pokemon the same size. Otherwise it will keep growing. Pixelmon only checks if PokemonProgress == 3200 or PokemonOccupied == 0 to stop the growth!
Step 7: This is where you can be creative. Make this Number as big or small as you want! At some Point you will only be able to see the Pokemon from very specific angles due to the way Pokemon inside Fossil Machines get rendered.
That is it! You just made your very own giant Statue. Hope this helps some of you, as I find these look very cool if used properly! You may need to make the GrowthNumber extremely large to have the Pokemons feet be visible. A tiny part will always get clipped if you want to hide the fossil machine.
Thank you to Pebbles and wdservers.rocks for letting me experiment with this idea on the server. The community is great and helpful, so go check em out!
Some more screenshots so you can get an idea how this would look.