now, im not 100% sure, but I think that's just two clean boosters in a row. If thats not exactly right, you'll get close.
This is not exactly what I use for a boost, but it should do the trick.
http://www.generalguitargadgets.com/ind ... iew&id=72&click the schem. link
be prepared to swap some resistors out though, I have two very different sounding 2n5088 transistors in my workshop. One for "shit" and one for "clean" same name, 2 different suppliers. For the record, the "clean" 5088s come from Pedal Parts PLus.
Anyway, then just put two of them in a row! then you have an over drive, or two boosters ZOMG!