How to mount radiator to the case?

[One_Hit]

Hi,
I recently bought my PC Parts and have started assembling the parts. I have mounted the motherboard and the CPU cooler, but I can't seem to mount the radiator of the DeepCool Captain240 EX to the Cooler MasterBOX Pro 5 RGB...
Please help me. The radiator is 274x120x27mm

Here are the pictures... https://imgur.com/a/xX6BNWw

 

[CountMike]

You will have to mount radiator in place of 2 lower, front, case intake fans.

 

[One_Hit]

How do I mount it? The holes in the radiators don't align with the ones in the Case

 

[CountMike]

Radiator fans go to the front instead of front case fans turned so they suck air from front and blow thru radiator. Hoses go to the top.