Alienware a51 Desktop

I am looking to start a new build, preferably with the A51 desktop case. My plan is to source a water cooled 3090 AIO 240MM radiator. Does the A51 case allow for a 240MM radiator? Or just two 120s?

I’ve done some research and cannot find a close up picture of the inside where the radiators mount. 

The a51 case looks great. And can be found refurbished for like $700 with the outdated 1156 motherboard of course. I am not a big fan of custom cases. I like OEM look like most of us in here. 

Any thoughts?