I replaced the clouded over/yellowed headlights in my newly acquired 1997 F150.
I checked prices locally and did web search. The best price was from Rock Auto, so that's where I ordered them from.
I went online and looked at a couple of Youtube videos on how to swap out the headlights and it looked fairly straightforward. Unfortunately, it was an entirely different story when I tried it myself.
Getting the headlights out wasn't too much of a chore, but putting them in was seriously frustrating. After two futile 20 minute sessions I ended up pulling off the front grill to properly position the headlights. Of course with a 20 year old vehicle a number of the clips that hold the grill in place broke or bounced off into the engine compartment, never to be found again.
I wasn't too surprised when an hour job turned into a couple of days work.
BEFORE
AFTER