Ok, I did a search, but I figured this is probbaly a newb question.

What UICP/LICP fit on the Perrin IC? I don't like their upper IC because of their color choices, I want silver.

 

probably any one that fits stock, since the perrin is a stock replacement

 

The Perrin IC is much larger than the stock IC, and if your going to be replacing the pipes you will also have to replace the factory airbox.

Here is a pic of a stock IC and a Perrin IC
http://www.lancershop.com/product_image.php?imageid=756

Injen EVO Intake w/Upper + Lower Intercooler Pipes is a perfect kit and can be found at www.lancershop.com
As for how it fits, I really don't know, I haven't installed them yet.

Good luck