oldburbs,
I could measure mine when I get to see it next week.
But, I had parts of my floor replaced, and I did not know where the seat should be located. So, we mounted the drivers 70% seat and then placed the jump seat on the floor. We simply placed aluminum "skids/lifts/risers" under the jump seat's base, until it was level with driver's seat. We then bolted the skids/risers through the floor and the base of the jump seat to (or through) the "skids/risers".
Does your Suburban have a rough-cut-looking metal plate/base attached to the floor under the jump seat? Mine had been removed.
I think
bowtietim posted a photo of the rough metal plate under the jump seat?
