I think it seems quite the other way, I have seen a lot of odd stuff around the place. A lot of the american forums I visit it seems that a lot of them want bolt ons and arent interested in doing anything one off or custom. I know for my non-toyota car a lot of the stuff is one off fabricated here and sent to the states, because no one there will give it a go.
Ka24's are a bit of a waste of time for us, seeing as they only came in bluebirds and pintara's, both front wheel drive. I dont think anyone would bother importing a 240sx.
Im just glad 3tc's are pretty indestructable after what we have out ours through , and its not even boosted.