Think I'll need to build a California Bosstone now
FWIW, when I look at the circuit it seems to bias centrally for gains around 100, pretty low.
The datasheets 2N3397's have *ridiculously* wide spans for the gain. I've got no idea
what the typical gain would be in the actual units.
Anyway it's probably worth playing around with the biasing for best sound. That might turn out to sound better than the original

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Some useful info:
Based on the 2N2926 transistor, which is manufactured with the same process as the 2N3397, the transistors have colored dots indicating the gain.
2N2926 hFE
Unsorted: 35 to 470
Brown 50
Red 74
Orange 135
Yellow 225
Green 350
The pics for the Boss Tone V1 shows transistors with orange dots which corresponds to hFE=135.
That lines up reasonable well the value I calculated. The V2 pic shows the Q1 with a yellow dot which is hFE=225.