Correct schematic for Mesa/Boogie Mark I?

[danbronson]

I have a stock Mitchell Pro-100 from the 70s, which is based closely on the Mesa Mark I, that I want to convert to the exact Mark I spec with higher quality components so it'll sound as close to the real thing as possible. But I'm having trouble finding the right schematic online. There are several available (including one labeled S.O.B., which the amp or a similar one was known as, right?), but some component values differ from schematic to schematic. Does anyone know which one is correct, or best sounding? Thanks.