Not many hold inventory on-hand. Most will drop-ship. Modern Automotive Performance is most likely to have inventory for aftermarket parts. Morries Minnetonka is most likely to have OEM parts on hand. A lot of people like Import Image Racing for mailed parts. All of them can be found here: http://mnsubaru.com/directory/vendors.222 Also, for something like sways it wouldn't hurt to see what you can dig up used.
I've been looking around for used sways for a little bit now. I guess they come and go pretty quick? I am debating about just throwing in the stock sway set up from the sti into my forester or going aftermarket
Found some whitelines with rallitek hd endlinks 24 front 22 rear on NASIOC for the price of one and a half new sways woot
Now, does anyone know a good local shop for wheels or am I stuck ordering them online? I am looking for lightweights that discount tire doesn't really offer. I found a pretty good deal on some OZ Ultraleggaras but was wondering if there are any local stores that may stock light weights