It's called an upper radiator support.
You can go to a metals place and get a length of L-profile steel or aluminium.
Cut to length, drill some holes in the end for the bolts.
Put some holes in and bolt down the radiator support brackets, and cable-tie the loom across its underside.
If you're really keen, drill some small holes for the weathershield clips as well.
Point it, it's just steel. It's pretty straight. It's easy to bodge up.
peter