After finishing my pace car build earlier this year I bought a 57 Plymouth with the view to build a 58 Christine with my son. These are a few of the build progress pics over the last 6 months.
I found it had a hard hit in the drivers door and sill. Also the passenger quater panel had been replaced a long time ago. I would say probably early 60's by the repair.
WOW!! very impressive! you've done more in 6 months than most do in 6 years. It took me 2 years just to find parts when I was restoring my Christine about 15 years ago. Great Job! If you need help with any specific details let me know, I'd be happy to help you. When I restored my 58 I was able to take measurements off my buddies real christine movie car.