Here's another one from Bajaman. It's a modified version of his AFD, but tuned to sound like a Soldano amp high gain channel. There are enough differences to necessitate a new board. More info here on FSB. Much like the AFD board, this one has the option for buffered bypass or true bypass. And the drilling template fore the AFD will work for the SLO as well.
This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.