Box and No Box

has as much to do with the convertor as it does the quality of your brakes.
2k, 2.5k, 3k it’s unlikely your gonna see much if any difference in 60 foot/ ET from any chance of those spots, it’s still gonna hit at where the convertor latches. Bigger effect is reaction time
I did it for more consistency in reactions. At the time my converter stalled about 3800. Factory KH discs with factory 10” drums in the rear.