[D13]

GM HUD's are tuned for windshield shape and specific geometry of the vehicle. The midlayer of the windsheild is a wedge tuned to the particular HUD and vehicle combo. Unless you find a vehicle with curvature very close to yours in the viewing area, and can set the HUD to the exact angle and distance as original, you will have focus issues, ie fuzzy and / or distorted. Without the wedge you wil likely see double image and ghosting.