Thanks guys, I missed that, guess I should have looked more closely.
Heres the rule per the 2015 rulebook;
"Trimming -The only trimming allowed on the inside edge of the fender will be for engine clearance (air breathers, header, etc.) this trimming must be done 16 above the frame rail on the front clip along the contour of the fender, and may only be trimmed in 3 from the edge. The inside of the fenders near the grille, the edge of the fenders near the body shell, and the bottom edge of the front of the fender may not be trimmed."