The engine stalling really isn't a fair test of what manual steering feels like, as the rack is trying to push fluid back through the PS pump, and the pump will resist fluid flow in the wrong direction.
I would strongly suggest leaving some fluid in the rack and running some lines to a small catch can, or just looping the inlet back to the outlet on the rack. Some early Taurus racks had a check valve in either the inlet or outlet port (can't remember...), just under the fitting, you're going to want to remove this. Either method will allow fluid to move easily in both directions and will keep the rack internals bathed in lubrication. Looping the lines on the rack is a common Fox chassis Mustang mod when deleting the power steering on the cheap; cheap meaning you don't want to go buy an expensive manual rack from Flaming River.
The Taurus has a lot of weight on the front tires, if you do this, you may want to add some more sets to your upper body workout.