My Install Guide
What to buy
Buy a clip removal tool. They are $5 at your local parts store. Sometimes they are called door clip removal tools or even auto upholstry removal tools. They look like a bent screwdriver with a V at the end.
Buy a soldering iron. Radioshack has cheap ones for $10-$15.
Buy some double sided carpet tape. I got some from Walmart.
How to install
Use the clip removal tool to pull all of the factory black plastic clips. I went bottom to top so the last one I took off was still holding the liner up. I would highly recommend throwing a rug or sheet over the engine so when the clips pop out that don't end up down in the engine. Yes I learned the hard way, twice.
Put the liner on a large table and give yourself room to work.
Put the new liner over the old liner and get the GTO emblem where you want it. You can press through the new liner and use the holes in the old liner to figure out where the center is.
Now hold the emblem in place and have someone peel back the other half of the new liner. Put down some carpet tape and stick that half back down. Now it should stay put so you know the emblem will go back down on the right spot.
Peel back the untaped half with the emblem on it and spray glue on both side. Stay about 6 inches away.
Wait for glue to dry.
Have someone hold the new liner up over the old liner and start from the middle and press your way out. Press the new liner onto the old. It will stretch quite a bit to get into the exact shape of the old liner.
Now peel back the side with the carpet tape and remove carpet tape. Repeat the glue and pressing step with this side.
Now trim off the excess on the sides, but... I didn't want any of the old liner showing so I left about 2 inches all around the sides and I glued that 2 inches and folded it over around the back.
Now heat up the soldering iron. I went around and poked the tip through all of the factory holes in the old liner from the back side. I just poked the tip through, then I went around to the front and worked the hole to size. You can get away with this on the hood liner, but the trunk liner should all be done from the back because the old liner will melt also. Be sure to be in a well ventalated area and take the steps neccessary to not inhale the fumes.
Now put the liner back on the car. The kit comes with new clips, but I just reused the factory ones.