Car
1995 945 250k. SACHS/BOGE Shocks and Struts installed last fall, poly cone bushings, poly endlink bushings, lower OEM-style lower chassis brace, IPD/Cherry Upper strut brace. Tie rod ends are new Moog. The front end was aligned over Thanksgiving weekend. Also running custom hub-centric spacers with BBC/Propus wheels. Stock front and rear anti-sway bars. Ball joints were replaced middle of last year with quality TRW units when I replaced the struts. My previous struts were Bilstein Touring. Going "back" to Sachs/BOGE was an "upgrade" in both quality and handling.


Symptoms
Slight rear-end sag. not too bad, but I can see it in the photo below.

My rear springs have 250k plus, this car was the "hauler" for several years (lumber, bricks, rocks, etc).

What I really "feel" is that the car dives a bit on corners. On left turn I can feel the right corner and side dip. I can also sense the perceptible shift of the car's center of gravity on such turns. I get a little bit of dip on braking as well.

What's Going On?
I'd normally blame the struts and shocks, but these are pretty new and don't show any signs of wear. That leaves me springs and anti-sways as the most likely culprits.

However, I'm kinda tired at throwing money at problems and (usually) hitting the issue with the spread. I'd like to make some real suspension upgrades here and stabilize the car's handling.

Are my springs to blame, or maybe the SACHS/BOGE struts are simply not up to the task any longer?

Any recommendations/ideas?