I would like to know what size bracing 1/4 or 5/16 E.g is used for a D55 and a D40 Traditional?
I'v never sen specs regarding Guild bracing
size and I'm probably one of the more-well-read members here as far as Guild's literature. I'm very sure that it would vary according to the year the model was made, since Guild was in a pretty continuous state of evolution between "lightly built" Hoboken to "built like a tank" in mid '70's-'80's and back to heavy in Corona, and most recently "light" again.
If it's in here you might find something I've never seen, and that's about as useful as I'm gonna get:
https://www.gad.net/Blog/guild-guitar-price-lists/
If we knew why it was so important that you're trying again we might be able to offer more useful info .