Clarification on Tundra Brake Upgrade potential conflicts

Has anyone done the tundra brake upgrade (preferably 231) on a set of Pro Comp 52 series 16"x8" with 4.25" backspacing?

As it is now, the outside wheel face of the stock calipers just...i mean just barely clear the inside face of the wheels. I guess i'm unsure about what part of the tundra calipers exactly will conflict with the wheels. I have read some detailed posts on the forums, but from the close-up pictures (maybe too close-up)...it's just not clear which part of the caliper conflicts.

Can anyone clarify? Do the tundra calipers conflict at the inside face of the wheel or on the inside radius of the wheels?