Two port breather - Alternatives?

I agree, Dan's level of detail and knowledge of how this stuff works is a real treat as well. Everyone tends to think of all emissions control devices as needless junk, but if working properly things like a charcoal canister and even EGR will have no affect on performance and if tuned right (esp. EGR) you can actually gain a bit of MPG.

IMO unless you like your garage reeking of raw gas fumes when you shut down after a drive there's no good reason not to add a charcoal canister, except for being able to see it in the engine bay which if you have a fully detailed show-quality engine compartment might be another reason not to use it.