I tought that the corolla had the same suspention as the vibe. I was just on the dropzone website and they say the have coilovers for the corolla but for the matrix it says TBA?
I do believe the suspensions are of a similar design, however things like springs are determined by the weight of the vehicle and are probably different between the Vibe/Matrix and the Corolla. Also, the strut length is probably different due to the taller Vibe/Matrix.