Not sure I understand you question. My comment about brake pedal position is dependent (or may no even apply) on what brake system you buy. For my Invisibrake, It is now adjusted to pedal position all the way out to the seat. And DW doesn't move the pedal anymore...just adjusts the seat when driving the F-150. So when you take the bare system off, whichever you choose, you just need to understand the instructions and what it means if you do adjust the brake pedal to your driving position, and then if you do adjust the pedals, then put them back into the position that the brake system was installed at when you toad up.
Dave and Beth
2015 Cornerstone 45J
Ford F-150 and 2016 Polaris Razor