Scion offered Hotchkis Performance brand of front strut tie bar for the 2005 xB and xA. The gray color bar was option part number PTS27-52040. Later they offered a red color TRD brand bar, which fit all year Gen1 xB's and xA's.
I have a Hotchkis bar in very good condition; pictures are attached. Let me know if you find this acceptable in lieu of a TRD bar.
I totaled my beautiful limited edition scion XB, but bought a brand new battery just before it happened. Battery is NOT damaged in any way, it just doesn't fit any of our other vehicles. I paid $160 for it and I'm only asking for $100.