Blue GT 5.0 is correct. The stock air box IS a cold air intake already. The thing you really want to get rid of is the pipe between the TB and MAF sensor. The C&L intake pipe is real nice but I have some problems with fitting it correctly. Eliminating the EGR spacer will hopefully fix that for me. My intake is positioned a bit higher because of the 351, so that may have something to do with it. I think it goes for $99. Here's a picture from the C&L web site:
You could also try to fabricate your own tube. Those rubber couplers are a PITA to find, though.