2001 Boxster Headers

[Shatteredpixelz]

Hey all, I was wondering if anyone knew why so many of the headers listed for sale specifically exclude the 2001 model year in terms of fitment?
See this as an example: https://www.ebay.com/itm/267213304751?_skw=986+boxster+headers&itmmeta=01K1KTMJ4SMZEJXQ087ZSG0PYF&hash=item3e372773af:gooAAOSwNCtn8~2w&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1cBxf3Ax amgoKe8SZq%2FeDqVRnGzq1VYPkoo1XOqlXoYJkvSfkxEeuzHS XpRWy7Tkon6ghk6%2F5%2B%2B1XHHtav4iJfSG2s5iQcRfCzwe VcERavgteLJrfNQ97lqbB%2FaxZuLTZTH0eUnPm2bAV0zHs9TC g6JS1GgNt2yQTIK%2BIPiPHkEYkhrmyp%2B76h%2BNXY9zQKvO csMnNuhR4kZZilrTYJm%2BSOYRGZvO0XK8xdX9tSShmZdUhigB bAm0%2Fy9tiWnh5jDMc5L3nUQYT1V9QeXerTPl943EVLPmqlxK YKfYzAt1Phnmg%3D%3D%7Ctkp%3ABk9SR-ii0vqMZg

I reached out to Racing Dynamics and they said that they don't know why there'd be a reason why the 2001 MY is excluded and that they don't hear complaints from people buying theirs either.