I bought two of these with custom machining on the back panel for a pair of monoblocks. They shipped in less than two weeks even though they had to translate my drawings into CAD. All the holes were perfect.
The only thing I would note is that the top and bottom plates aren't symmetrical - meaning that the mounting holes along the sides to attach to the heat sinks are slightly closer to the back than the front. I drilled my own holes in the bottom, and discovered this afterward. I was still able to get the chassis together, but this made it more difficult.