I'm still confused on what you are trying to do, but I believe I see what you are trying to say.
You bought a barebones kit from a company and want to know if a specific case works with it? The only difference between cases (when it comes to motherboards) is how large of a motherboard it will take. Most cases will fit an ATX case, but there are some that are larger (e-ATX) and smaller (mATX). Obviously, this varies between boards, so we need specifics.
What exact hardware are you using and what cases are you looking at?
If this isn't what you are asking, please re-write your posts so they make sense. Small grammar mistakes can be ignored while reading, but I can't help if I don't know what you are saying.