T-Rex's quality grilles start with solid stock of aircraft quality T-5 or T-6 billet aluminum rather than extruded aluminum as used by some competitors. The stock is cut to length then shaped to its specific contour. Each grille is then hand assembled into a custom jig and precision welded with a process called ""T.I.G."" to ensure a strong and clean weld. The final stage of manufacturing includes a three-stage polishing and cleaning. The upper grille is a replacement while the bumper grille is an overlay. Both are available in chromed or polished finishes.