Help with original cobra questions

[Mj_72]

Hello, first post here. I have some questions about original 1966 street and S/C cobras and was hoping someone had the patience and free time to enlighten me. I have searched countless pages and cant find these answers.

Did any original 428 cars have copper brake lines?

Did S/C cars come with carpeted interior or were they raw metal?

Last question and a complex one. Is a 428 street car that has been converted 85% to an S/C ( side pipes, rear flares, wheels, dash and gauges, 427 side oiler) worth more in its current state or restored back to original with a non numbers matching but period correct drivetrain?

A lot to unpack here but I appreciate the effort and interest.