Ready to transfer: https://drive.google.com/file/d/1I6xA0qiMnQzKpB4qO95y-4nfHxGlALUx/view?usp=sharing
This is a verified
layout of the big muff. You can use it to build many different versions. This is a helpful site: http://www.bigmuffpage.com/Big_Muff_Pi_versions_schematics_part1.html
The board will fit in a 1590BB, it's about 3.5" wide. Not the smallest layout, but I think it looks nice. If you don't have the ferrite bead or don't care to use it, it can be replaced with a jumper or you can draw the track in with a sharpie if you're etching.
EDIT: Here's mine with a couple of mods.