I have searching this site for a picture of what catalytic converter I should have for my 2nd gen 1500 5.2 ltr i am new to these forums so still trying to navigate where to find out things? please somebody help me this truck has been modified when I bought it I'm trying to get it to pass smog I'm not sure how many 02 sensors or how many cats I should have? I don't want to make any costly mistakes. Thanks in advance for any info.

 

Google can help.

 

They changed over the years, what year is yours?

 

Guess I need to get out more, I've only ever ran into the 2 in 1 out, with 1 upstream and 1 downstream sensor.

 

In later years, it was single in/out, California has some differences from everyone else over the years as well.