Yup I lift my car from the torsion beam all the time, no 2x4, just on the edge.
But I need to drive my car on 2x10 to be able to slide the jack underneath, car is on h&r spring.
I also modded a old set of axle stand so I can use them on the jack point, the V on those was ridiculously deep and it ended up poking the floor.
Filled them up with some mig
Work perfectly!