If you have a GT you dont need to remove the Valve Cover, if you have a GTS you do.
Why would it be different??? To me, it looks a bit tight if you dont remove the valve cover to remove it from the top but if you have done it before, I will definitely take your advice and remove it from under the Celi. Also, any other advice that you didnt mention on my other thread? And how long did it take you to install, just trying to get an estimate? I will also try to take some pics and get an install guide for us GT owners.