First try at a “Dean style” amp rack

Started watching 5 Star on YouTube a while back and decided I’d give it a shot on the amp rack for my 1977 Blazer.

A few details: 12 gauge sub and speaker wire. Knukonceptz 4 gauge to the amps. 1/0 main power and ground. The rack was cut to fit the entire back panel of the sub box.

Thoughts? Suggestions?