Ist Gen Teg's have 5.25" speakers in front doors and rear corners. When installing speakers in the front doors, because of the rain shield from the factory, they will have to be shallow mount, unless you do not mind cutting the plastic the speakers mount to. To gain some extra depth, you can add a 1/4" nylon spacer to the bottom most window track mount closest to the speaker (it is a 10 mm bolt). This will space the window away from the speaker to give you another 1/4" of clearance without affecting window travel. The rear speakers have no such depth restrictions. I used to install car stereos for over 15 years, so I I have done this a few times 8)