Welcome to the 4x4wire! Here is the place to find what you seek.

Multiple companies made these pieces for the Mitsu ilk, but you're looking for old pieces. Racks were available from Conferr, now defunct. Modern racks can be found through Garvin, Adventure Rack, and custom parts. Brush guards were made by many companies, even Warn; but again, you're looking.

Several board members are making bumpers with brush guards: Toasty, Justice, and Don to name a few. ARB still offers bumpers and racks. Read through the Mitsubishi Archives, using the Search Function.

Cheers,
Russell