1971 Demon info needed on some codes for my car

I have a 71 Demon I have the original fender tag and Build sheet
September of 70 build
Couple of question I have

1.Code 5X8 Upper door color (Charcoal)- So should my inside door and sail panels are painted Charcoal?

2.Code J54 Sports Hood - Whats This? (I do have the Hood pin option also J45)

3. Code J81 rear spoiler wing type - I think it should be a Gull wing but want to make sure. I will be wanting to buy one also. So it you have one let me know.
Thanks for any help