I wouldn't worry about the catch can, it will just decrease suction. And who cares if your TB sucks up a little oil, I don't think it will hurt anything.
P.S. Don't worry about cutting vacuum hoses. You can always slide them onto a pastic fitting from Autozone (next to the Ts) to reconnect. No one will give you crap about that.
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I <3 forced induction.
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