Suzuki has a spring hinge top compartment design for the SX-4. The parts without the Garmin GPS are only about a $100 for the mount, power unit, etc.
I have an SX-4 that I retrofitted it into as it was added as an option a few months after my car was built. I have a Colorado that I also used the pop-up assembly on to hold the GPS and I created my own dash top panel by using a dremel tool to create the pop up (with the Cruze you don't need to do that step. You can wire the power into the radio cradle with a few wire splices. I can get you the Suzuki part numbers if you're interested.
I have an SX-4 that I retrofitted it into as it was added as an option a few months after my car was built. I have a Colorado that I also used the pop-up assembly on to hold the GPS and I created my own dash top panel by using a dremel tool to create the pop up (with the Cruze you don't need to do that step. You can wire the power into the radio cradle with a few wire splices. I can get you the Suzuki part numbers if you're interested.