with a little modding (moving the lower hdd cage back) you can fit 2 x 240mm rads in. one up top and one at the front.
one thing is though that the top rad needs to be of a certain thickness or it may not clear ram
this is from the user manual
the component support in the case when using a radiator in the top is depending on the thickness of the radiator. see info below. when having a 2x120mm radiator mounted in top, you cannot use the rear 120mm fan slot at the same time. (you could mount the fan outside the case though)
-up to 40mm radiator thickness: support for most water cpu coolers and larger memory modules
-up to 50mm radiator thickness: support for most water cpu coolers and standard memory modules with a max height of 40mm
-up up to 70mm radiator thickness: support for only certain water cpu coolers, depending on the water inlet and outlet. supports only standard memory modules with a max height of 40mm
also google images of the setup
with the black ice stealth rads you shouldnt have any issues mounting the rad up top plus a thicker one at the front.