Mounted the accelerator pedal from the connect and cruise kit with the help of 3 rulers and a laser pointer. Had to wait till now till the new clutch and brake pedal bump stops came in. I used standoffs and bent the bracket instead of making a new bracket. I might revisit this later but it looks okay and placement ended up perfect. I used these standoffs from Grainger:
1 - 5GHT5 (Standoff, Round, Al, 1/4-20x1)
1 - 5GHT6 (Standoff, Round, Al, 1/4-20x1 1/4)
I was trying to get it as close to GMs recommendation as possible
Standoffs Pictured, I used the 1" on top and 1.25" on the bottom
I was able to get damn near perfect. It's 2.5" away from the brake, 1.25" away from the tunnel, and 2" below the brake pedal top and bottom (The 1.25" standoff on the bottom of the bracket made a big difference getting it aligned.) You can barely see in the picture where I bent the pedal bracket to lay against the firewall. I still need to drill the final hole.