That kit on the US demonstrator model was heavily modified, so whilst it was an

"official kit" it actually looks very different to the official cars that were put together in Japan.

The US kit was fitted by a private bodyshop and not by TRD themselves which is why there is so much difference in the size of the arches etc.

Some like this look better, others who seen the car in person have said the kit was fitted poorly.

There is a guy on the Australian boards who put a TRD kit

(replica) on his car and tried to make it more like that US model that you linked to.

Here is his thread.

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http://www.mr2australia.com/mr2play/tm.aspx?m=20720