Brake Master Cylinder

Is there no booster because there isn't a substantial vacuum from a rotory engine? or just wouldn't fit? but it still looks amazing.

THIS engine has been bridge-ported, the equivalent of runing a radical cam on a piston engine, it will not produce enough vacumm. I could have installed a vacumm pump to use a brake booster. Not running a booster gave me the ability to mount the master cylinder on the firewall, so for now I'm going without it.