FG580 Dimensions ?

The FG-580 is fairly rare, since it wasn't initially exported from Japan.  It was made 1971 to 1978, a fairly long time by Yamaha standards.

While I've worked on many vintage FG models, I've never seen a FG-500.  The closest is a FG-500.

I assume it's the same dimensions as the FG-180, of which I've seen many.  They have a 16.25" lower bout, 10.63" upper bout, and 4.50" body thickness at the end block.  The body length is 19.75", and the overall length 40".