"470k/470pF" adapted for a Fuzz?

[polifemo]

In amps one quite often will find a "470k/470pF-high pass filter" that will pass highs at about 720Hz.

Right now I'm trying out this idea in a Fuzz Face based fuzz by using 22k/0.01uF, 10k/0.022uF and 4.7k/0.047uF between the transistors in order to add some high end bite.

Using these resistor/cap combinations will create filters at about the same frequency as the "470k/470pF-high pass filter"- and the sound is quite nice - but I'd still appreciate some input regarding resistor values as I'm not that experienced in building fuzzes!