bought a rotofab intake on my ZL1..stupid breather tube snapped off on the top during install, didn't want a vacuum leak so installed a catch can which replaced the breather tube anyway and now works to keep oil off my valves and out of the intake tract...couldn't be happier with my catch can purchase
I bought a Moroso catch can which is documented as one of the best, but the Apex one that just came out looks pretty slick too and seems easy to clean!