It was hard to find any information about this intake and looks like Corsa no longer offers this for the 2011 -2014 GT. So I don't have much information for you on it. What I DO know is it will work for both auto and manual transmissions. It is No tune required, but we all know a tune will help get the most from it. It's pretty well isolated from the interior engine bay heat as its completely enclosed. It also connects to the stock grill snorkel to allow exterior air to enter. I went with a C&L Racer intake that requires a tune due to its 95mm MAF sensor housing tube. I'm asking $180. Just want enough to be able to ship it to you and buy myself a tune for the C&L. PM me with any questions or offers, I'll try to answer any as best I can.