hey i have upgraded the pathetic excuse that nissan calls an intercooler on my 06 3.0l
the original was also leaking so i did some measuring and head scratching and then purchased a water to air kit from votion industries on ebay. after relocating the power steering cooler, the fuel filter and the solenoid vaccum control valves for the swirl control and nozzle control everything fitted in very neatly
see the pictures attached