...most of the results you get these days are no longer Toyota dealers, but "mass marketed" websites that primarily carries common parts.

There are very few search results that give you actual dealers...maybe dealer associated parts suppliers? The same goes for Honda/Acura. You have to search a while before you can find actual dealerships who sell all available parts online.

Even most aftermarket parts companies have been bought out by large corporations. A perfect example was a California company named "Performance Parts." They initially did Porsche parts, but added Toyota truck parts. They primarily carried aftermarket parts, but you could be guaranteed that every part fit perfectly. It was almost like they actually installed the parts to see if they fit before selling them...lol What a great company! I went back to them after I bought my 2008 Tacoma, and found it was a different company...they just kept the name. It was filled with generic car parts that may or may not fit without modification...what a shame.