I will try and get some pics taken later today, it was a black plastic flower *** I used of the right size, (about an inch of the open end)! I super glued it in and painted the outside part you see through the grill in body color. Its took the heat fine!
From memory; remove the grill 3 x screws. Cut the hole from the inside layers of the hood to out! First theres a black felt pad that is foil backed, this cuts with scissors. You'll see its a circle shape pressed into it, cut to the inner edge of this circle. Then I used a Dremel (electric hand-held high speed hobbies tool) with small cutting disc to cut through the fiberglass hard hood skin, this also has the shape / circle cut-out moulded into it. Cut well with in the circle, you will find it starts to cut into the hood top painted side. Better to cut way too small and then file out to size! Remove the hard skin circle, then cut through the outer layer. I used masking tape on the paint side, just thought it might stop the paint splintering on cutting, you can mark it also if need be. Then I ground it away back bit by bit to the circle I wanted to fit the ***-top up into snuggly. Used the Dremel sanding drums to do this with, (or you can get sanding drum attachments for electric drills). You could leave the hole with no ***-top, but I wanted a more finished factory look. I don't worry about rain going in, it only goes on the black metal bulk head part and runs off, and perhaps headers. Using the ***-top cuts the amount of water going in it, to chanel it through the OE drainage hole thats already there and directs it down in front of the headers.
Note, use a mask, googles, gloves when cutting / grinding, and put a cover over your engine bay, that dust is bad!
Good luck.
