I'm pretty sure you're not calculating the dual MC/balance bar setups correctly, as the input force into each MC is divided in half assuming a centered balance bar. A tandem 7/8" bore MC and (2) 7/8" bore MC's in a balance bar arrangement are not equivalent, as the piston in the tandem unit are in series whereas the MC's in the balance bar arrangement are in parallel to one another.
That said, I like the C5/C6 brakes (or Wilwood equivalents with respect to piston area/rotor diameter/etc) in a manual configuration with a 7/8" bore MC and "GG" friction rated pads. While many may not consider "GG" pads to be street friendly for dust/noise/wear reasons, they're the best solution IMHO when seeking a simple, low cost and highly effective manual braking solution.
Tobin
KORE3
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