A cautionary message:
A front spoiler will keep the nose down (and cause oversteer if the car was "balanced" before).
What happens if the car get sideways at speed? The spoiler almost stops working (the frontal area is not the full width of the car, but the shorter diagonal) and the car may may understeer. That's what the big side plates on the rear wing are for - to keep air on the wing.
The better spoilers partially wrap around the nose corners to delay and lessen this effect.