First off, I wanted to thank FastCelicaGT22 & AZZKIKR for answering my questions on the threads I posted in Ecelica and last but not least my boy Raso for physically helping me out with the install.
This is the install guide I used and the guide I will be referencing. https://www.celicahobby.com/ubbthreads/thread.f_1870145513_0_collapsed_2__1.html
I am not going to explain how to remove the mudguards or where and how to remove the bolts because it's already explained on two different guides in Ecelica. I'm going to concentrate more on the BITCH of the project, which is removing the heat shield and header from the Celica. Here are a few hints that aren't found on the guide that I think should've been mentioned.
Installing headers on a GT isn't that different then installing them on a GTS except for a few differences that I noticed along the way. One difference is that on the GT there is no need to remove the valve cover, credit for that goes to FastCelicaGT22, don't know why it's really mentioned on the guide so you could totally skip that section of the install and go directly to Step 5. Second difference is that you will decrease one bolt when following the instruction guide for removing the heat shield & header. For example, if the guide says that you need to remove 5 bolts off the heat shield you will only remove 4 don't ask me "why?" it's just something that we noticed. Maybe, Toyota wanted to be a little cheaper on the GT and decrease a bolt.
I personally think this should be mentioned one the top of the install guide before Step 1. The most important thing you must remember about the removal of the heat shield and header is that neither the header nor the heat shield will be removed through the top. No matter how much you think you can remove them through the top, you can't. Even though FastCelicaGT22 & AZZKIKR had warned me about this, I had to be an ass and try anyways. But I learned this the hard way and spent about 1 hour, twisting, turning and pulling. So, don't waste your time because the heat shield and headers are removed through the bottom of the Celica.
This step should go right before "Its time to get under the car". Even though the top part of the heat shield is the first to be detached it's not the first to be removed. Like I said before everything must be removed through the bottom so you must make space for it to come out first.