Originally Posted by Despised Icon
Sorry for the confusion, I forgot to state that you need to go through a few chapters with the mech you choose in the beginning. Doing so allows you to unlock the parts and weapons used in the mech specs. Than can start buying and building the mechs I used, which will than make it easier to go back and get S-ranks with ease. I will try to clear up the guide, and hope it helps you.
Yeah, I'm around chapter 4 now, and I pretty much have your builds.
It was basically a matter of figuring out what types of weapons the model numbers in your guide were referring to. A little research at gamefaqs allowed me to find lower-grade substitutes until the right part was available in the game.
The builds are quite helpful at this point. Thanks!