Hey there,
I'm missing a bunch of my 2006 G35X Sedan's mud guard bolts, as pictured:






Any idea what the part numbers for these bolts are? Looks like there are two different types (one black and one chrome).

 

Could go to a hardware store, pull off one of your existing bolts and bring them in to them. The head might not be OEM but you can get the same thread and bore or similar and 'customize'. Maybe they have some cool colors?