Yes, ShipFixer has mentioned the key points as it all depends on a lot of things. We don't (thankfully) have a lot of issues of overheating with this vehicles, so I think it's a moot point. The stock Nissan radiator is a 2-1/4" single-row core. When you get into the stock-replacement, aftermarket radiators, you usually find two options, the single-row as mentioned and a 2-1/8" double-row core, which is what I have in my 2006 (my 2008 has the single-row Koyorad). I don't notice any difference in performance between the two and unless one is towing heavy under some adverse conditions, i.e. steep hills, 100+ degree F. heat, etc., I would expect the stock radiator to hold-up just fine. As far as the CSF all-aluminum, I'm not sure if that is still available for purchase. Stillen and Offroad Gorilla no longer sell it because of problems with them. Griffin radiators has an all-aluminum rad for our vehicles, but it's around $680 if my memory is correct.