'77 450sl sits to low in the rear
 

'77 450sl sits to low in the rear. I have not messed with it at all. Is this shocks or are the springs sprung or what, any ideas? also where is a good place to get replacement interior parts both upholstery, carpet and rubber window seals etc.
Thanks

1st Things First - Ride Height
 

Springs determine ride height. But the shocks are gas charged and have 75 lbs each so the car will ride a little higher if blown shocks are replaced. The rear sub frame mounts can go, resulting in a lower ride height. Springs last a very long time so if the shocks are really old, try replacing them.

Steve.