Thanks for posting those part numbers of the complete OE strut/spring assembly. I'm looking at doing struts, and for that price if I go OEM style that's really easy for $90. My guess is that these might be excess inventory from GEN1 vehicle production that some suppliers swooped up. New Stock, but not factory boxes or packaging from what I can tell.
I noticed that MOOG now has a standard spring replacement for about $45 each plus shipping.
This was one of the problems with my car, and I had it fixed before GM required that both the struts and springs be replaced. I had a terrible noise with the top strut bearings and mounts to the springs. Who knows which parts are still there, as the repair was just replacing a strut bearing top plate.
