1969 firebird build

[ws6 beat]

I bought a firebird and have started to work on it. It is the car in the link below.

http://barbysstreetrods.com/For-Sale-1969-Firebird.htm

I actually didn't buy it from that site or auction I got it from some guy in Northridge Ca. I've taken off all the layers of paint and have decided to replace the roof panel, driver side quarter panel, and the panel below the rear window. I want to do the work myself. So I came here for guidance. You guys have some amazing cars.

when replacing the quarter and roof panels does the car need to be on a body cart? Do I have to replace the quarters and roof panel at the same time?