Is this floor part replaceable?

Having spent a couple of weeks in the hospital having a new galv chassis & bulkhead fitted, my 110 is off to the beauty salon soon to be resprayed Bonnati Grey

The edge of the floor panel by the rear door is badly rusted. I guess it will have to be cut away and a new piece put in before it is resprayed.

I dont suppose its possible to buy a replacement floor edge piece is it?

I cant seem to post smaller photos, is there a guide on here anywhere?

New floor panel is about £25 inc vat.. new sill around £17

Thanks, Ill have a search around the net.

The sill has already been removed for the tree sliders to be fitted, so I guess its a new floor panel needed?