Instead of the Dr. Boogie, I'm going to build this OLC Slow Century:
http://www.olcircuits.com/olc_slowcentury.html
The Mesa Dual Rectifier circuit is based off of the SLO-100, and so this pedal is based off of that SLO-100. It's similar to the Dr. Boogie, but I think the distortion sounds a bit smoother.