In a medium bowl, whisk together the whole eggs, egg yolks, half-and-half, honey, vanilla, orange zest, and salt. Set aside.
Slice the brioche loaf into 6 (1-inch) thick pieces. Lay half brioche slices flat in a 9 by 14 by 2-inch oval baking dish. Spread the raisins on top of the brioche slices, and place the remaining slices on top. Make sure that the raisins are between the layers of brioche or they will burn while baking. Pour the egg mixture over the bread and allow to soak for 15 minutes, pressing down gently.
Bake for 55 to 60 minutes or until the pudding puffs up and the custard is set. Remove from the oven and cool slightly before serving.