Currently I have a full pedal stroke. What I mean is that the brake pedal lines up perfectly with the clutch pedal and if I push the brake pedal, I get the full "push", which is around 3" or 4". First, I was affraid they were going to be different after the pedal arms were spliced together, so that was a pleasant surprise.

Also, I can change the plate thickness or the location of the pushrod. If I drop the pushrod down 1/2", then it's 13.5/2 = 6.75 ratio or another 1/4" to get 13.5/2.25 = 6.0, so that 3/4" may or maynot equal the sweet spot. The plate thickness can go from its current size all the way down to around 1".

I think the first thing is to make an adjustable push rod. Then, drill another hole for the 6:1 ratio. That way, I can install that to see how I like it. That does not require any drilling of the 3/8" "half moon" into the pedal assembly housing.