What makes a body lean to one side? What to check/fix?

[73Charger]

I think my 73 has a bit of a lean to the driver side.  My guess is it has come from years of just having a driver in the car, and maybe bushings being worn ?   What else could cause this lean?  I haven't tried to actually measure it, but where the car sits (in a portable garage, the ground leans that way as well, and I dont know if that would add to the condition as well sitting 3 years like this now in this position - although i do drive it. it sits all winter in this garage as well. I'm just seeing it eyeballing it now since I thought it was just the ground, but now I'm driving it daily and notice it on pavement as well. I'm not a very heavy guy either. New items when I bought it 4 years ago: All shocks (new), Bearings(new), Leaf springs and U bolts(new). Ideas?

[8WHEELER]

Torsion bars, one may be weak or just needs an adjustment on the low side, There is a bolt in the
middle of the lower control arm that adjusts your bars up or down, You can adjust the low side bar
up and if it needs a lot of adjustment you may need a front end alignment depending on how much
you need to raise the car.

Invest in a service manual they get well used, and welcome to the site 

Dan

[73Charger]

Thanks for the advice.  I've been looking through my Haynes manual and see the procedure to ck the ride height and they talk about turning a bolt to adjust it but they dont mention which direction goes which way, but I'm sure once I'm under it, staring at it I can figure it out. Ofcourse, I'll probably 50 other bushings etc that I still should replace.  I dont think they check much when they do inspections or old cars anymore and it did just pass inspection. 

[Plumcrazy]

Turning the bolt in raises the car

[Chryco Psycho]

clockwise to rasie the car

[73Charger]

Thanks again for the help guys.  I could budge the bolt on my driver side to raise it even with it jacked up under the frame. maybe I should have supported something else. Anyhow, I noticed that the bolts were uneven on the sides, so I just dropped 3 rounds out of the passenger side. Now that bolt may be out a tad more than the driver side, but I think the car looks level atleast.  I didnt do the measurements since I'd have to move cars around to get to my cement garage floor, but atleast it looks good.

Now onto the next thing - noticed my center headlights went out. I'm assuming they are just for high beams. I'll be trying to find replacements for them tomorrow.  Last time I needed a part (windshield wiper arm bushings) - I had to go to a local dealer. Ugh. Expensive.

[bull]

Could be weak leaf springs on the rear.

[73Charger]

the leaf springs, shocks and u bolts were all new when I got it. I was able to fix it with a couple turns of the torsion bar. So cool.   
Then I found nice new halogen replacments for my high beams and replaced those the next day. They seem like a better type of light than my old ones and am half considering replacing my original low beams now but they will be a bit harder to do being off under the fenders plus my plastic/foam parts in front of the lights are quite warped which made it tricky to get screw drivers into the bezel screws as it was.