newage Posted November 18, 2007 Share Posted November 18, 2007 Would a Boost Logic exhaust fit straight on to a standard cat on a tt supra. Link to comment Share on other sites More sharing options...
paul mac Posted November 18, 2007 Share Posted November 18, 2007 no you will need the 3" to 4" adaptor Link to comment Share on other sites More sharing options...
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