Thanks Guy's, I got a lot of the other half of the firewall sanded today!!! I'm worried about using paint remover so I don't mess up the new powder coating on the frame. I tried Brian's process it was working on the 1982 Lacquer paint but was very hard to get the factory paint off so I used my angle grinder with flapper discs and it worked!! I'm going to use Brian's process to remove the undercoating on the lower section of the firewall. Anyway here's a picture of the other half progressing on. I still have work but I'm getting there!!!!
Firewall.jpg