Well I got tired of asking around for the right size hole saw, so I just bought one for myself. I marked the dead center of the "gas cap" and drilled right through with the 2" hole saw. The chrome ring of the projector is barely larger than 2", so that gave me some room to smooth the circumference of the hole with a dremel. The fog light fits in there perfectly. Once installed, I went around where the plastic meets the projector with a mini torch to perfect the edges.
But still one problem, I noticed today that the dealer sent me two passenger-side finishers. When I received them, I checked the part numbers on the packaging to make sure they were the right ones. Today when I opened them up, one of them was labeled incorrectly. Unfortunately, I already put a hole in both of them. Hopefully the dealer will still send me the right one.
Black 2007 Frontier SE extended bed 2wd
Interior: Pioneer AVH-P3300BT, Kicker DX200.4 amp, Kicker KS690 front speakers, Kicker DS650 rear speakers, 2 Kicker 10" Comp subs, Kicker ZX300.1 sub amp, Blue LEDs under driver and passenger dash
Exterior: 3" front spacer kit, 1.5" rear shackles, Xenon HID fog lights, BFGoodrich All Terrain 285/75r16 tires