I have the v6 and my best friend has the ss. I have driven his quite a few times and the differences that I noticed are the ss sits lower to the ground and also the frame is different. Gives it more of a sporty look. Do not know if this is a option in a tb but his interior is swade wrapped in leather, the ss is all wheel drive, and overall I just like the apperance better. I have never driven the 5.3 version but the ss is fast. Reminds me of driving my camero but sitting up high. Also the ss handles like a car.