I am having my 69 RS Z28 restored. The dash pad and carpet are a must. I will also do the seat foam. The guy doing the work says the seat covers will probably not survive the new foam and that is okay by me. He recommends the door panels as well as he says what I am replacing will make them look dull. I want to be as original as possible and am planning on seeing what it looks like with the mandatory replacements first. Any thoughts on value impact as well as any options and overall asthetics will be appreciated.