I think this all to be a moot point in any event, since there are exactly zero aftermarket "big brake kits" to be had...

I believe you'll find the same number of multi piston calipers available.

The hot tickee seems to be:

Drilled, or drilled/slotted rotors

Stainless braid brake lines

OEM pads

That's my theory & I'm stickin' to it...