Bernie actually hit it right on the head...
I'm used to looking at "build books" that tell you the production percentages, and after awhile, it all looks the same.Besides, when I'm told that they are all coming with certain things on them, It doesn't matter where it is done..it's all factory till it hits the lot!( invoiced to the dealer)
Bottom line: Lexus will build the IS300 in certain ways....in other words, even though it may say that the actual factory is building them with such and such...when they pass through port, they have P.I.O installed options installed on them. ( port installed options.) The factory decides how they come equipped, the port slaps it on, and they arrive at the dealer as such. The car's will all have that stuff on unless you special order it. ( or have the dealer remove them at delivery..not likely) The dealers sell it to you the way they get it.