Thank you very much for the great information I really appreciate it.
Guess I will position the catch can under the air filter because it looks like the best place.
I am doing this because of an issue I had during the summer.
Took my bike to the local dealer to have it serviced.
Installed a K&N air filter about 500 miles prior to taking it in. Told them not to mess with air filter because it was fairly new.
Mechanic checked it anyway, and when he reinstalled the filter he pinched the vent hose that goes into the back of the filter
between the throttle body and the filter.
Needless to say I blew out 1/2 quart of oil after a 300 mile ride. Topped off oil and rode back home. Same thing, down 1/2 quart.
Checked service manual for possible high oil usage causes, and pinched breather hose was listed.
Removed air filter, and that is when I saw that the hose was pinched causing pressure to build up inside engine and puking oil out.
Inserted hose back into filter, and oil usage stopped. Amazing !!
And that is why I want to install the external breather system to ensure this never happens again, and to keep all the crap out of my throttle body and cylinder heads.