I replicate it whenever possible. If the seats have been "restored" in the past, the burlap and those wires are usually long gone. In either case, I purchased several yards of a very strong fabric that the local upholstery guys use instead of the burlap. It is far stronger and longer lasting, but doesn't look stock. I install the burlap (with or without the wires) and then lay the fabric mentioned above over that. Looks stock and is more durable than burlap alone.