Have you seen their slogan - "deadly braking force" - not what I would call good marketing - twin 8 pots though that would stop Big Daddy never mind big eck!
I don't think it's going to be a matter of if. The Gator kit uses a radial moto lever. Probably a 19 to push the dual 4s. I'd hazard a guess that a 13mm Brembo would be about right.