First off, massive fan of the modeling work of Atolm and WickedZombie45. You are both modeling gurus. I've been screwing around with SFC3 for a while, it's fairly easy to mod so I enjoy tinkering with it. I've added ships, screwed with hard points, changed this, tweaked that; but for the life of me I cannot figure out how to increase the in-game size of Starship models in SFC3. I looked around, couldn't even find a single thread about it which lead to two conclusions. It's so easy it's not worth even talking about and I'm missing something, or it cannot be done so it's not mentioned. Any help would be very much appreciated, thank you in advance.
You need a 3D modeling program capable of importing and exporting SFC models, such as Milkshape 3D, 3D Studio Max versions 3, 4, or 5, and GMAX. GMAX would be your best bet, as Milkshape has issues with some models sometimes. Make sure you have the appropriate plugins for your program.
When you import the model, you just increase the size of it, and export it back to .MOD format, which is what SFC uses.