Check out these early 911 front shocks, What are they? Options

[Krieger]

There are two here. One assembled. One pulled apart. Each strut can was loaded with oil and so were these tubes.

[Racer]

Maybe the pnuematic shocks from a 911E ?

http://www.caranddriver.com/comparisons/91...1e-coupe-page-4

The hydropneumatic front suspension, made by BOGE, fits entirely within the Mac­Pherson strut and is completely self-con­tained, requiring no external pumps or pres­sure tanks. And, since the entire suspension function is performed by a piston acting on a high pressure gas chamber, no springs or anti-sway bars are used. The car's height is con­trolled by the position of the piston in its cylinder. Regardless of the load, the piston can be moved to a predetermined point by adjust­ing the pressure in the chamber. For instance, when a load is placed in the trunk, the front of the car goes down. After you start to drive, an internal pump—activated by suspension motion—pumps gas from a reservoir to the piston chamber and returns the front of the car to its proper height. Obviously the bumpier the road, the sooner the suspension reaches the proper height—but only on a glassy smooth surface should it take more than a quarter of a mile.