Can I cut the torsion bars and put the car down?

Yes, the car will sit on the bumpstops. But they are attached to the K so if you are rebuilding the suspension, you are going to have to keep key parts in there so the hub is attached to something. Sounds like a bad idea, but I really dont know what your doing anyway. Pull the torsion bars and your car will sit pretty low in the front. Lower than a floorjack can get under.