Got a request for this one on the Facebook page. The original Rocket Fuel is an overdrive and a boost in one 1590BB enclosure. The overdrive side is essentially a Tube Screamer without any diodes, and the boost section is a straight MXR MicroAmp clone. The overdrive side is below and is laid it out for 9mm mini pots you can mount directly to the board from the solder side. If you build it without the boost daughter board, you can fit it in a 1590B.
There’s also 3-position switch for changing the bass response. Use a DPDT on/off/on and wire it like this:
