Acutally they install right where they are on the GTs. Your base model came with a grille to cover that area up. That grille will unbolt from behind. Alot of companies sell the kit right down to the OEM wires and the two switches you need. They will come with the OEM lamps and bulbs. You can also buy the Euro clear lamps to replace the OEM ones.
The bulb number for the fog lights is #899. It is a 37.5watt Sylvania Halogen so most people upgrade them to a 50watt bulb which is #885. Look around at your local auto parts store for the Xenon (blue tint) or halogen bulb that you want. If you can't find them there, www.CarDomain.com
will probally have them for you. (The link leads you to the bulbs.)
Here's the diagram to know what lighs you would want.