Head Breathing, puke cans

[harleyguy]

Hi Mike
I just purchased our third bike. 02 Deuse 10 1/2 comp, se perf heads se257 cams, Bub exhaust. There is a Whimmer 90 degree air cleaner on it with puke cans at each head breather. Its a trick looking setup but I noticed in J&P cycle they say that this is intended for stock engines. My question or concern, will the puke cans allow the heads to breath properly or would they allow too much pressure to build up in engine considering the build? I don't want to leave anything to chance. Any other recommendations?
Thanks

[Mike]

I do not think they will be a problem on your build other than they do eventually fill with oil and, well, "puke". Doherty puts hose fittings on the bottom of their's and run these down below the frame so any oil that does escape is kind of out of sight (make sure it does not go right to the rear brake rotor).
Mike