15 x 10 x 2 would be big enough for a chargecooler surely? , have you got the space to mount the water jacket section elsewhere?
that area would be for the *intercooler* not a chargecooler. there is howver space to fit a spearco 9x10x4.5 chargecooler and a 15x10x2 pre rad to go with it - just dont have a handle on the efficency of such a system