Gerahead's 71 Dart

I am trying to get all my stuff in order to get started on the non-exterior paint of my 71 Dart and I have a couple of questions.

- What color is the interior of the body painted? I plan to go with a bright yellow exterior with a black interior.

- What color is the underside of the car? Body color or black? The wheel well area in the fron looks to be body color with the undercoating applied over it (sort of).

- Is the passenger side exhaust hanger bolted in or welded in? Is it located in the same relative position as the driver side? Anyone have a pic available?

Thanks in advance.

Jim