Which Brake Master Cyclinder should i upgrade to?

hi, i have an s14 with sr, and i bought the rotora 6 pot front caliper, and my autoshop told me i should upgrade the BMC inorder to fully function the 6 pot caliper, i try search for 300zx ones, but i want something more, something better than that, anyone can help?

I use a 90 zx TT 1 1/16" (nabco not tokico), compared to stock 15/16" (ABS).

good luck, post results

you’re going to need a bias dude if you use the 11/16’s on a 6pot upfront with stocks out back.

You’ll lock up the rears all the time.

i want to change the rear to the 350z brembo, but i heard is not possible
and which company makes the bias?
and how do i know which BMC will fit me