Restoring Acrylic Tank

Hello,
I have had the fotunate luck of strolling through my fathers garage to
find a 55 gallon Sea Clear acrylic aquarium. After wiping the drool from my
mouth when I was told I could have it, I began thinking about how to restore
it.

There are numerous fine swirl scratches and some moderate ones on the inside
and outside of the tank. The ones on the inside tend to disappear when I
filled it up with water to see if it would leak but the external ones and
some of the internal ones still show.

I saw in a previous reply Fish Guy mentioned he had 20+ years experience
with acrylic and I wanted to ask you veterans of the group as well.

I would like to get this tank to a "showroom" finish. Can I
polish/restore this tank? If so, how? I want to polish the interior as
well. I am fairly handy and love "elbow grease" jobs so time and effort is
no issue.

Thank you all for your responses in advance!