Wow!
What a find! I've always loved the Classic series although I've never owned one until just a few days ago when I acquired a Classic III. The Classic Omega was the first Kirby I ever saw when it was demonstrated in our living room when I was about ten. I was very impressed and was a little disappointed when we didn't buy one but that demo cemented the idea of Kirby being a super premium, perhaps even aspirational, brand of vacuum, an idea has stuck with me for nearly 50 years so the salesman was arguably successful on a certain level. Even if neither he nor the Kirby company made a dime off of the demo, they turned me into a lifelong Kirby fan.
Your classic has great bones, as they say, and it will shine up beautifully. Let us know how the project progresses.