what you need is put your standard lights in, drive up to a wall or garage door and then mark where the beam sits then without moving your car, put your aftermarket lights in line the beam up to where the standards were

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Red Escort 1.6LX
Then - Red Escort 1.4
Then - Silver Fiesta ST 170BHP
Then - White Fiesta ST MR200+
Now - Mitsubishi Evo IV Forged 2.3 500BHP
and Mondeo Mk3 2.0TDCI