ABSOLUTELY MARVELOUS!
I thoroughly agree, This fits perfectly with a final boss fight, I'm thinkin' in space and definitely against Eggman! The original was great for a boss fight, but yours just sounds frickin' EPIC!
Sadly, I can't give you a perfect. I really think this needs to be reuploaded. While volume does indeed add to the tension, in this case, it's clipping like crazy. You've got some rather annoying distortion that borders on noise
If you just toned down the loudness a bit so that you got rid of the infernal clipping, we'd be listening to a masterpiece!