brake lines.

that appears to be the new polyemer coated line they make which is steel with high copper content, make sure that it is though be cause if its nylon it needs to be replaced before you even move it

but I doubt it is nylon because you can't flare it, and they did use the correct fittings

otherwise all should be fine except that compression union on the right side rear brake line and the block needs to be bolted down, also make sure there double flared, if not they all need to be replaced

its a good idea to go through and visually check since there are a couple issues in the rear