Yep. If I remember, GM even had a wonky 1.5-DIN setup.
And a lot of the single-DIN cars had a second DIN-sized pocket under or above the radio. If you removed that pocket, you could put a double-DIN in there, which is handy these days because now you can get head units that have backup camera inputs.
You should upgrade to Jaguar. They get rid of the in-dash margarita machine and replace it with a cognac dispenser. 