Rear seat on a 70 blazer?? Please help!

[blueridge]

The rear seat on my 1970 blazer has offset rear legs. In other words the four rear legs are not evenly spaced. From left to right the fist leg seems correct and the second is slightly to the left and the third is about two inches to the left and the fourth is correct leaving a large space between the third and fourth. I took the seat cover off the rear seat and found that this is correct for this seat. It was made this way and the floor on my blazer, even though I just replaced it, it was the same pattern. Has anyone seen this before. Is this a suburban seat maybe?? I wanted some input before I put things back togather. Thank You.........