Mike, It's not just you.
I don't think ANY of the available inner cowl panels really fit correctly. You're going to have to beat it into submission to match the inner-outer cowl and the floor. It might even be easier to cut the bottom loose from the inner cowl panel to be able to form it to the correct shape. I managed to make mine fit, but it wasn't fun.
The flange on the inner cowl should be alongside the floor panel flange that bends over the rocker panel. The FAM calls for a couple of welds along that joint on the inside.
Browse through some of the pics (link in my signature). I took some photos of the process I went thru.
