I installed mine. it came with no hardware, no instructions. nothing but the piece itself.so. be prepared to either dig through your tool box or go buy a few nuts an bolts. i just lined it up and marked it.. and drilled two holes.. an ran two long machine threaded bolts through it and snugged them up flat. ( had to remove and replace the two lower front corner covers on the sides of the lower front facia ) ill post some pics tomorrow.
My two GTH brake/fog ducts came with nuts and bolts. I put 65 Mustang windlace around the fog light openings and found a pair of 3 1/2" driving lights(on sale $14.95 pr) at Advance Auto Parts that fit snuggly. I fabricated two brackets for each light that attach with the center nuts on them to hold it into the smaller opening. The center "65" grill will be cut down to fit in the middle. When it gets warmer, I plan to install the three parts and add an aluminum splitter under the front spoiler to strengthen it for "cone sweeping". Nuts and body clips will hold better than the factory rivets (half of them are missing after only one season of running). A perfect blending of the old and new. SEE Y'ALL