yep, stock throttle body (ZZP ported Stage 2 though) and the spacer does have the passage for fresh air. Maybe I will pull the breather off this evening and try it out.
Can't say I pressure tested the core, but I did run water through it and it didn't leak (not at high pressures though).. Fingers crossed I guess?!?!?!
So that port on the top left side in the pic (close to the 90* coolant inlet elbow) serves as a proper supply location for clean air into the crank case??