As a builder, a guitarist and a PC enthusiast... this project was one I've wanted to do for a while. The build is a budget gaming rig that belongs to one of my best friends and former band mates.
You can see us and the rig here: https://youtu.be/ZqDamVl_6Yw
I felt that the front mesh of an amp would make a great front intake. I swapped the speaker with a similar sized RGB fan and used the same hole to concentrate the air intake. The back opening serves as exhaust as well as access to the IO. The whole back panel swings out on a hinge so you can work on it. I did use a metal motherboard tray screwed to the wood for stability.
With the amp potion on top removed, I put back in the knobs for show. Everthing else I found a way to use. The front headphone and mic inputs work. I used a front audio connector from an old case and JB welded that baby in. The old 1/4" input is now the reset button. The power button is new and functional. The rgb remote sensor sticks out where the distortion button was so it isn't blocked in any way.
That's about it. Anything I forgot to mention or any questions just ask.
Thanks PCPP people!