In other news, I finally got the tires put back on my wheels. Adjusting them to 6.75" of backspacing for the 18x9" wheels worked perfect. They fit great.
That is with almost all the camber available. There is about 1/4" of clearance to the upper subframe mount. I'm fine with that because the wheel moves towards the fender as the suspension compresses. I'll need to adjust the ride height as I add weight back to the car. It's sitting a bit low for my taste at the moment.
True Forged was great during the whole process. It did take a while to get the wheels back, but they were done right. They really are a stand up company. You certainly get what you pay for.
Hey Scott, if you get a chance, can you take a pic from behind/under the rear to show the clearance from the inside wheel/tire to the subframe mount, bolt, and coil over shock? I've got a lead on some 18" wheels that are 8" in front with a 38 offset and 9" in rear with a +45 offset which brings it to 6.77" BS (almost exactly like yours). I've got the same MM low profile bolt you have and plan to go coil over soon as well so I want to see how much clearance there should be with that setup.