what the limit on the stock radistor? I have an 05 with 104k still on stock radiator with several mods(s2 cams/Buschur tbe catless no muffler/ets intercooler with short route piping plus intake/ forge rs valve/ megan o2 housing plus manifold. should I upgrade?

 

You don't need to at all......You can have over 700whp and be fine on the stock rad.

 

most people get one to clean up the bay, make more room for such things *** bigger turbo or a ff kit.