Checking through https://www.subaruparts.com/v-2009-subaru-legacy--2-5i-special-edition--2-5l-h4-gas/engine--engine
vs
https://www.subaruparts.com/v-2011-subaru-impreza--2-5i--2-5l-h4-gas/engine--engine
it shows that the cam gear, the geared idler pulley, and timing belt are different between those two years (other than the timing cover and gaskets, which whatever.) So can I just install the 2011 2.5l impreza engine in the place of the 2009 2.5l legacy and go, or do I need to swap the timing components?