Mancini XHD leaf springs...

Spring with more leaves goes on the passenger side. Some people say you can level the car out by cranking up the driver's side torsion bar a bit. Have never run them so I can't say for that it works but I can see why it would. Don't know for sure how to get more lift on the car. Maybe switch the front hangers side to side. I've seen people mention that but I don't remember whether it's supposed to raise or lower the rear.

And yes, as stated above, SS springs will raise the car some but I don't think you want to buy another set.