Be nice to find. Usually the horn profile is output as points. Vector would be handy for plotters and other CNC.
Remember that WE designed most of their horns before horns with a T value was invented (Salmon, 1942/1946).
Flare rate (and also T-value) will be different between the two planes because the aspect ratio differs from unity. Most likely WE used a changing aspect ratio in order to make the curving simpler/less compromised (horn relatively flat in the direction of the bend). Probably similar reason for the Sato horn.
Flare rate (and also T-value) will be different between the two planes because the aspect ratio differs from unity. Most likely WE used a changing aspect ratio in order to make the curving simpler/less compromised (horn relatively flat in the direction of the bend). Probably similar reason for the Sato horn.