Need specs for custom grill

[MysticMac]

I know people have made custom mclarens and what not using the gen1 and gen 2 LS grill. I have just come across a extra grill and wanting to do something special with it. I like the McLaren style grill and would like to attempt to make my own because I spend all my other money on vital parts for my car lol... If someone has a cut out or measurements needed to fit the insert inside the frame of the grill. Any help would be much appreciated.

 

[FDR]

I doubt anyone made a schematic for it. Take some paper, tape it together, and trace the grille. Cut the material oversized, trim a little at a time until it fits... Or cut the waterfall out and place an oversized perforated sheet behind everything