Looks like those lamps would be mounted way too low to be used for turn signals. Maybe it is just the angle of the picture?
Also, turn signals also have to be seen from the side, that is why stock turn signals don't have the lens hidden in a housing but instead the lens "pop" out beyond the housing. Allows drivers to see your intentions not only when positioned directly in front of you, but also if at an angle.
I would use them as DLRs and stick with the stock turn signals. The shot in your garage does show a nice cutoff pattern for the lamps, how are they on the road?