Suburban wood floor

[nadodave]

Hmmm. When I removed the perimeter bolts, the wood actually sagged a bit in the middle (near the fender wells). But there appears to be about a 1" lip the wood rests on at the rear sill plate (or whatever it's called). The wood also somehow seems to be wedged in at the front. Can't see how it is removable without taking out the sill plate. Was yours different?

Thanks,