Replacing Headlights in my 2006 Tacoma TRD Sport

Like many others, my TACO headlight assemblies are faded and cloudy. I am trying to figure out which of the two parts I need to buy in replacing them. ToyatPartsDeal.com has a "Unit ASSY" and a "Headlamp ASSY". I don't know enough to know which one I need to purchase. I've attached a screen capture of the two. Hoping someone can tell me which one to get.

Any help is greatly appreciated.

Best,

Mike

 

The unit assy is just the housing, here's a better diagram
http://parts.toyotaofdallas.com/aut...ngine/electrical-cat/headlamp-components-scat

 

So is the Unit ASSY all I need if I'm just replacing because of cloudy lenses?

 

Technically yes but is it really worth it to save $40? Instead of plugging in 11 year old components just get all new stuff.

 

Good point. ;-)