You should have a 3/8" port on the center intake runner, between the carburetor and the valve cover. This is where the PCV valve hooks up. You are not really suppose to tie into the PCV line with the brake hose, but it may be your only option other then drill and tapping. You could make up a thick carb spacer with a 3/8 port drill in it, it would be pretty easy to make and install.
Joe
