In a car their is a big difference between a heatercore and a radiator, In water cooling, A heater core is just a large radiator.
O, I can tell you now that it wont fit in the bottom-front a Lian Li withougt you loosing atleast 1 of your 3-1/2 drive bays, and it may take alot of modding. I am going to be putting mine in later next week (I have a PC-68), (soon as the top to my maze3 gets here) but I am taking a slightly different approach to putting it in than you will probably take.