I installed the Z Car Garage brake kit on the Z Replica yesterday. Boy, everything should install this smoothly. The kit comes with a 60 page PDF file with complete step by step instructions for the installation. I was able to pull the PDF up on my phone and follow the instructions conveniently. Instructions not only had very clear pictures, but also included torque values and thread lock instructions at each step. Also, the machining is BEAUTIFUL and the quality is excellent. The parts arrived in three nicely packed boxes. The parking brake set-up is also pretty cool.
The only issue I ran into during the assembly was that the previous front brakes on this car had the Toyota caliper set-up, and the 4 bolts that secure the disc to the hub were longer than the stock bolts. As a result, I had find the correct bolts in my stash. Fortunately, I had them on hand. You can see the bolt length difference in the third picture below. Other than that, a very straight forward install. Was able to complete the install in a day.