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Discussion Starter · #1 ·
I'm thinking about building a turbo for my 97 Prelude, but I'm curious as to what kind of catalytic converter I should get to replace the one I have. How large are the openings on the ends of the stock cat? Can it be modified to be 3" openings? If not, what should we buy for a street (legal) cat? Is the 3" high flow cat legal?

Any help would be great

Car Sound makes a 3" cat. No one makes a 3" exhaust though, so you will need to have it custom made.

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