My dad stopped by today and we worked on the rear brakes. I’m still missing the right caliper, so we got started on the left side. The bracket bolted on without any issue and the main caliper and parking brake caliper bolted up to the bracket easily. I needed to shim the bracket over slightly to center the caliper and I may still need to shim the caliper away from the axle slightly, but this is good enough to measure wheel clearance.
We wrapped up the other side (minus the caliper) and installed the rear wheels. We have about an 1/8″ gap at the closest point between the parking brake caliper and the wheel, so we’re good on clearance.