Like i said i need to do a write up. If you search you'll find a few. I can't remember the model i got the grill from. Got it from a scrapped runner belonging to a guy on here i believe, DeathCougar.
Anyways, i just spent a lot of time using a dremel and sanding by hand until the frame was cleared out and smooth. Then ordered a piece of mesh that i liked. I carefully used a hammer and the edge of a table to bend and shape the mesh into shape. Then used a few small screws and zip ties to mount the mesh, you can't see how its mounted its very clean.