Here you have a set of sealed beams from 1992. Lens and bulb are a single assembly with the lens focusing and projecting the light
View from the driver's seat. You can see the light is predominately focused into one very narrow and slim area with very minimal spread. Borderline spot light kind of pattern.
Fast forward 24 years to the HIDs I have in the BRZ
World of a difference. Light is spread across my full view, but with a bit of a center line focus on whatever the nose of the car is pointing too. The MR2 most definitely needs an upgrade.