My car 2012 300 SRT8 Has anyone successfully replaced these? I ordered JBAs high flow cat mid pipes and they were missing the exhaust pressure sensor bung. There were some other flaws so I'm sending them back. Is JBA the only company that makes these that fit a 300? Looks like the only other companies that make them require their own headers as well. Just looking to replace these cats with high flow and this seems like the best way except I'd rather not void the warranty on a new part by drilling into it.