I’m looking at a 1992 K5 Blazer (To purchase) and it has brackets in the floor behind the back seat. It appears to be an in floor mount for something. Did that year Blazer have a third row removable seat as an option? Just curious. It obviously wasn’t there and the seller said he bought it used as it was presented, with out anything attached. Any information would be appreciated…

 

The K5's end of production was 1991. Perhaps a new body style fullsize Blazer is what you are talking about. As far as seating options, I am pretty sure that there was only a 2nd row available from the factory, but people have been installing additional seating for a VERY long time. We could comment a bit better if you had pictures.