Going to Autozone in the morning with my caliper to do some measuring. From the looks of it I might be OK. Check out how the outer half of the 13WL (top of pic, opposite of bleeder) is already cast shorter than the inside, almost the same as my grinding job. Whereas the 4Runner caliper is flush across the outer surface. I guess I'll see when the measurements come out.
13WL Tundra
13WM 4Runner