That could be the case...the PO told me he called Stillen and had the option to send the car to Stillen to install the GTZ components or order the same parts and install himself. He told me it was quite expensive w the shipping costs and labor costs to send it to california for pretty much a bolt on setup (including the turbos) so he ordered most of the parts and did it himself (as he was a mechanic). He said there was no plaque or anything that would have been given so it was no point to transport it. My memory is kind of fuzzy but i believe that to be the case.