Not looking to bang gears anymore, besides you can go faster in the 5.0 for a fraction of the cost of the Shelby....my plan was to clone the Shelby and heavily modify the 5.0 drivetrain
seems like you have it thought out already
which everone you get, both cars are very badass, so you can't really go wrong.
CTS is a bit more unique, as not seen as much. do you know anyone who has these cars you could drive ? that would be a good way to start.