Need help identifying suspension (Sachs springs + Shocks)

[Galapolis]

Came across this on FB marketplace: https://www.facebook.com/marketplace/item/663266734537248/

Guy says the part numbers are rubbed off on the springs. They are supposedly Sachs dampers and springs that drop the car 1.5". Even looking up the part numbers on the shocks yields no results. Does anyone have more info on these? I've never come across them before. I'll upload the pics here too for archiving purposes. I'm mostly interested how well these pair with Eibach sway bars.

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[Galapolis]

OK so I think I'm able to answer my own question. Short answer: These have been discontinued for a LONG time. We are talking over a decade. They used to be sold by UUC and Bavauto as a spring/shock set for about $700. They are the only lowering springs that have no rake whatsoever, lowering the car somewhere in the 30mm region both front and back. More info here: http://www.zhpmafia.com/forums/showthread.php?5081-For-Sale-UUC-Sachs-Performance-Suspension-System-(Springs-AND-Shocks)

I guess I won't be getting those considering how old they are. I'm still unclear about how Sachs Performance is different from Sachs Advantage. Perhaps they are identical and Advantage is just the new name or successor.