not sure, do a search and you'll probably find your answer. try "intercooler size" or "intercooler"

 

There are a few sizes of the NPR intercooler that are available. They work well up to about 375-400 rwhp which most of the 13B's won't see anyway. The only drawback with the NPR is that they have a large pressure drop with the flow across the core itself. It just isn't that efficient when compared to a big $$$ intercooler. However for the cheap price they go for they are a great upgrade over the stock T2 intercooler.

-GNX7