Corsair 500r's ideal mounting position for Corsair Hydro H90

Hello, i have a Corsair 500r with a Corsair Hydro H90 installed on the top of the case, because i tried mounting it on the back, removing the 140mm stock fan, and concluded the H90's radiator won't let the side panel slide into place and close. It's working fine but i would like to see the H90 on the back of the 500r, freeing some space on the top for 2 extra fans if needed.



Can you guys clarify this?



Thanks in advance.