thepastrecedes is working on a custom Big Muff based off of a violet Ram's Head circuit with an 18v power with sag control and a prescence knob. I am excited to get to play with it. I think it will contrast my opamp muff and give me a bit more treble. (Especially with the mods.)
He let me design my own decal for it with his preferred layout. This is what I came up with based off of the reverse muff. (I love the black and red on that.) muff by Eleventh Division LLC, on Flickr
Stomp is going near the ram head in the red space.
He had done an 18 volt one with a charge pump and it made it get some interesting sounds, plus with the pot, you can lower it down and get the low battery effect.
I got an update email. I guess the circuit wasn't sounding very good so thepastrecedes did a different one. Not sure what this one is most like, but here are pictures including one with the decal.