Seat asymmetry

[GGRIII]

I'm finally getting to put my Z back together after a few years(260 stockish)  The seats were recovered 3 years ago and I am just getting back to reassembling them.  I noticed that the seat backs have flush bolt holes on one side and protruding bolt holes on the other, other than that they appear symmetric.  My thought is that the protruding holes go on the mechanism side and the flush holes go on the spring side. Can anybody confirm or deny they proper seat assembly?

[S30Driver]

The flat seat back bracket should be mounted on the console side of the seat back.  The thicker bracket, goes on the door side with the clear plastic to protect the seat back covering.

[GGRIII]

20 hours ago, S30Driver said:

The flat seat back bracket should be mounted on the console side of the seat back.  The thicker bracket, goes on the door side with the clear plastic to protect the seat back covering.

That much I know.  My issue is which seat back goes on which side.  The mounting holes are spaced identically but on one side of the seat back they are flush and on one side they protrude.  It appears that I can assemble them either way but I'm just not sure...  If I uncovered one of the seatbacks I could take a picture but with the cover on these features are hidden.

After further inspection I have convinced myself that the side of the seat back that has the protruding collars goes to the mechanism side and not the spring side. I say this based on wear marks on the clear vinyl pieces that I just found in my 'box of seat stuff'

Edited February 15, 2017 by GGRIII