1962 Chrysler Newport four door sedan

I have a 1962 Chrysler newport four door sedan that I have been slowing restoring for the past 4 year's. This is my first classic car and I am a beginner but on the bright side I am mechanically inclined and I've worked at a couple body shops and learned a decent amount. I have to repair the floor on the driver and passanger side near the frame bolt's and I am going to repair it. I was wondering how to get the body off of the frame thank you.

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