That's a tall order. You could have a look at the rear suspension page on Amayama. They ask now for "frame number", which you can find (without ID), on the driver's door frame decal, the one with the VIN. It's something like this: Model code: ZVW30L-AHXEBK (aka "frame number") The above is for a Canadian spec 2010, with build-date August, 2009. Your will probably have the first 5 values the same, but the rest different. Not sure how much it would matter for rear suspension, but worth doing it right. Anyways, this is the rear suspension page for the above, more'n likely no different than your frame number:: Rear spring & shock absorber for Toyota Prius ZVW30L - Auto parts - Amayama
