Welcome to the Bolt. Many ways to go on this and many will chime in shortly, I'm sure. The big question is What do you want? Bone stock, frame off restoration, or rat rod or somewhere in between? Once you have the vision, then you can progress.
Will it move under its own power? If so and you want to use it a little, brakes are on top of the list.
But, What do you want it to be?

Mark


1951 Chevy 3100
Some days you get the bear. Some days the bear gets you.