FWIW, I can provide sets of my modified Monogram grilles, along with clear headlamps and a photoetched emblem.
These sets are not a regular production item and the quantity available is very limited. But until I make a brand-new assembly from scratch, this is probably the best and most accurate version you'll find. I scaled all the add-on's from the real pieces. Sadly, these won't work for a LeMans because the grilles are very different.