SmoothSteve3 Posted October 2, 2003 Report Share Posted October 2, 2003 Hey everyone--- Does anybody know what the stock size of a '90 Lumina 3.1 cat. converter would be? I really just need inlet/outlet size and length......I'm seriously considering dropping my cat. and putting a glasspack in its place. Thanks! SmoothSteve Quote Link to comment Share on other sites More sharing options...
Brian P Posted October 2, 2003 Report Share Posted October 2, 2003 2" if it's single exh Quote Link to comment Share on other sites More sharing options...
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