Perhaps better yet, the model designation for a CT4: V Series Blackwing is 6DF69. I'm unsure what the 5's is.
Be careful. They're addictive. Before you know it, you'll be getting a Cadillac tattoo. I have a couple specific to Caddy among others.eeeeehhh u just blew my mind. Thats bad ass. I got a tatoo scheduled with my order number but might replace it with my VIN code in the steering wheel. First tat ever.