Edit 5.30.16 ~ ~ Don't know if anyone has ever tried to make these grill nuts but I just made another set and have simplified the design a bit. This makes the nut easier to fabricate and allows the nut to be inserted from the front of the panel. Also, allows the use of 1/2 inch stock. The grill is held rock solid. Check out the new image below.
Check out the photos.
With these nuts and the screw you will be able to pull the grill up tight to the sheet metal and no more loose, rattleee grill. Also, it is much easier to use the screws to install or remove the grill than it is to use the Isuzu grill clips.
PS - - No modifications to either the grill or the sheet metal are needed