Ah, no it didn't.
Well, it doesn't fit. I scooted the tank out and tried putting it in from the back as well.. no go. I took the compartments apart and tried putting them in separately.. still no go. I need about an inch on length and width.
So, sadly, this project is done. Bummer because I was doing so awesomely. :P I'm not going to rebuild on a smaller scale. Too much time and energy! I'll just buy one. Money wasn't the issue for this, I just thought it would be fun to do and see how cheap I could do it.
I learned lots of things though. How each part of a sump works, what it does, sump benefits, and even how to make one. I even learned that I am insanely strong, scooting a 55g full tank with 90 lbs rock and 60 lbs sand. Not a complete waste.
Sorry to those of you following along and thanks to those of you that helped.