Lower sway bar bolt missing, need help finding parts site

[99BoxsterATL]

I was just at Discount Tire getting a new set of tires when right before they put the back left tire on, I noticed two bars not connected behind the rotor. Talking to the guys there, it was the sway bar. Apparently the bolt fell off by itself and I am glad I caught it. I am looking to find a bolt replacement with out having to go to Porsche and have them charge me $50 for a bolt that I just plan on screwing on myself. To make it back home I inserted the bolt in the hole and zip tied them.

Does anyone out there know of a site strictly for Porsche parts such as nuts bolts etc.? Thanks in advance!

By the way, I got a set of Kumho's for 550 bucks installed! not bad...