Calculating Hydroboost Travel

[steve aleve]

I wanted to see if anyone knows the best way to calculate the range of travel needed for a hydroboost pushrod? The hydroboost I have is off of an astro van and I have already measured the astro pedal to make sure to get the ratio the same, but now I don't know exactly where to set the pedal to allow for enough travel without putting the pedal too high. Hopefully this makes sense. Any help would be appreciated.
thanks!