Help with manufacture of these

[speedtactics]

I got a set of lowering caps from a friend off his GTS. However they are not marked front or rear? they do have different part numbers but the parts look virtually identical? Any help would be great.
2855828559

[sambo32]

Those look to be factory caps, not lowering caps. But I could be wrong.

[speedtactics]

Interesting, Now I need to stick my head under my car and look at the stock caps.:z:

[TRH62]

What was the reason he decided to remove them? I'm looking to get a set of them to lower mine.

[speedtactics]

Funny he gave me his stock caps! At least I didn't try to instal them.