The rear spoiler on the stock T/As are built up underneath to easily clear the ridge while the
aftermarket fiberglass ones are dead flat and alittle shorter so you do need to build them up
abit to make them work
Either that or notch the front of it alittle to make it work
The easy way to tell the difference is the AAR spoiler has raised supports on the back of it while the
T/A spoiler is curved more and is smooth on the back
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