Definitely NOT Zr6's as mentioned, I own a set so I should know.
Someone mentioned Azev 18" wheels in the original thread I saw this video posted in, and it definitely looks like they could be. They only seem to come in a 5x114 bolt pattern though, and i'm not even sure if that could be re drilled for a 5x127 or if i'd need adapters.
I love the look of my stretched stockers with the 28" tall 345/40/17 filling the wheel well for my 'drag pack' , but when I put the street setup on with my stretched ROH's its just lacking. the 335/35/17's look too short, wheel face looks too small without the stepped lip to accent the edges and the offset just not right. Would probably look great if I put a 315 on it and stuck a 9c1 rear in the car lol. I love the idea of 18's for fitting larger brakes up front, lower RPM's on the highway with a 27" tire, better ground clearance with the stance I want and the overall look
For what I'm seeing the 18" Azevs for sale for, I can have them stretched, CNC refinished and buy adapters for less than half the cost of Colorado Custom 18's and i'm not a fan of the other 2 piece reps out there. I know these aren't exactly reps but I love the sharper spokes/flat face with the deep lip.