Manueverworkes,
Went through this with too for my 2006 S w/pasm. There are different thickness rubber spacers for both front and rear that sit on the top of the spring. Ideally the front should be 1/2 to 3/4 " lower than back as measured at the inner control arm bolts. Pelican carries the spacers.
Below from:
Strut/spring spacer? - Rennlist - Porsche Discussion Forums
"Originally Posted by
qikqbn
These are spring spacer part numbers for Caymans... I actually had to use these with my Caymans Eibach Pro kit. Pro-kit calls for use of 3mm spacer with Cayman, but I did not want it slammed so much so I am using the 6mm versions. Some guys even used a 3mm + 6mm stacked together to give a 20mm drop versus 30mm the kit gives.
FRONT 3 mm = 996 343 511 00
FRONT 6.5 mm = 996 343 511 01
REAR 3 mm = 986 333 504 02
REAR 6 mm = 986 333 504 03
One other thing to consider is a worn out top strut mounts. The rubber bushing in the strut mount gets tired and stretches... Kind of like worn out motor mounts sag down, but in reverse for the strut mounts. The bushing can soften causing the front bushing to sag upwards and results in dropping the front lower than the rear."
Keep in mind there is a leverage/amplification effect because the strut are acting at a point on the lower control arm towards the centerline of the car.
Unfortunately you will have to go through the entire install procedure again and we both know the rear is a pain in the rear to do.
An alternative is to engineer spacer between strut tricks bolt plate and body for the rear so the strut does not have to be removed.
Hope this helps.