This is a Hotchkis rear sway bar from a 2006 Pontiac Vibe. We took it out of my brother in laws car this afternoon and it looked like it may fit in the Prius. 2 bolts out, 2 bolts in (didn't even have to jack up the car) and sure enough it fit in perfect. Man what a difference in the handling with almost zero sacrifice in ride comfort. The part was for an 02-UP TOYOTA MATRIX 2WD / COROLLA / PONTIAC VIBE.