Since the rear is Torsion sprung, it is usually easy to raise or lower the torsion spring end of the vehicle a bit by tightening or loosening the bars, but it's probably not covered under warranty. I owned a 95 Hardbody and it sat a bit low for the wheels and tires I chose so I tightened the front bars to level the truck, and never had an issue, I raised it about 2 inches in the front. If the front strut springs have enough clearance around them, simple lift blocks can be used for maybe a 1-2 inch lift for under $20.00 total, plus labor. I do not have any mechanical experience with the Cube yet except I know how to install a LED Dome light kit from Autozone, ;-), so please don't try this without speaking to your trusted mechanic. Personally I do not believe a 1-2 inch lift would adversely affect the drive-line, i.e. the CV Axle geometry, but it would lower the Cube's impressive 4 star rating on rollover protection.
Just my 2 or 3 cents worth on the subject.