u/Great_Asparagus_4458

Hi all, i bought a 2004 350z yesterday and when driving it back it started burbling , after plugging in the OBD i got error code P0420 / P0430 which when looking into it is either saying it could just be an O2 sensor or (most probably) because it’s de - catted causing fuel to pass through without being burnt causing a missfire. Any advice. Is it drivable ? Do i need a full new exhaust system or would i be able to just whack the cats back on.

TIA