I have a 2003 S10 Blazer 2 wheel drive 4.3 automatic. Check engine code says:P0420 Bad converter. Midas said today is that my problem stems from having the WRONG converter. They said my car has California emissions and someone installed a universal cat. I live in Nevada and they SMOG test and with a check engine light on it is a AUTOMATIC fail. My problem is my temporary tag expires in 2.5 weeks and I need it to pass. DO I REALLY need a CALIF. converter or would a NEW universal one get me by? In Jan. I'm moving back to Ohio and they do NOT smog test. Midas wants $1305 for parts and labor and that's half of what the car just cost me. New exact fit NON Calif converter from rock auto is less than $200 plus shipping!!!