Most important thing for you to do is find out if you have a quill stem or threadless stem. Most modern bikes have a threadless, and they forget that some people (like me) have a quill stem that can't be flipped. 3 people have told me to flip my stem, now I just mention that I can't weld. Not to mention it is 0 degree so it would look the same flipped
I think it's funny how people today think of a "flipped" stem as upside down, when 10 years ago almost all road stems were prallel to the ground. If you ask me, bikes today come with flipped stems, which I believe was an answer to a demand for a more back friendly bike.