Do not mount a vented catch can and not keep a close watch on it due to oil vapor and oil dripping... in fact, if you are road racing or doing track days, several tracks will decline your tech inspection due to the fire hazard an open catch can has.
I designed a mount to place it forward on the core support and use the Improved Racing closed system with the custom fitting I made to utilize the OEM drainback to the crankcase. LMK if you need more info.
Click this link to see the catch can in action!!