I replaced my existing headlight body made for a “Chevy 99-02 Silverado” with Diamond Clear Headlights (Part # cws329) from StylinTrucks.com
It does not have the diffuser so it gives more light.
I also replaced the bulbs with Professional Halogen Lamp System (PIAA HB3) Super White – Part # 19006 – 51 Watts & is equivalent to a 100 Watt bulb.
The High beams are (PIAA HB4) Part # 19005 – 60 Watts equivalent to a 110-watt bulb.
They made a drastic difference in nighttime driving.
They were about $90 each which blew me away but I could not drive at night with what was on there & feel safe.