it looks to me like your original has been hacked out by stevie wonder with a rubber penknife
that bit of metal that remains is supposed to be in the footwell not on top of it
it also looks narrower than it is supposed to be, from memory it should be 3-3.5" wide
the top edge of the footwell covers that but it also needs fiddling under another piece along the tunnel side, they're a lot of faffing about to fit correctly, loads of randomly placed spotwelds along with a couple of short mig/stick welds in awkward to cut places when originally built
horrible job to do properly in my opinion