burb seats vs. truck seats

[GloryHound]

They probably used what they had since all the bolting was the same. Could be a case of end of model run had extra seats left over from applications that required the folding seat so they used them instead of making more none folding. Would be interesting to do a chart dealing with serial #, Plant, and interior color. See if that may have been the case. Or find an guy who worked in the plant that may be able to better explain this.