What brand is good, very good for replacement ?
1A Auto seems like a good reputable company ?

 

Do you have emissions in your state? If so OEM,

 

I do have emissions. Yes OEM would be best but cost the most... What companies online / Ebay etc would be totally just fine ?

 

OEM cat plus cost of labour is going to be rediculous.
Get an o2 extender (fouler) and be done with it.

 

Look at used OEM cats from LKQ, should be much cheaper. I think as long as you are not in California, aftermarket cats are ok. I would look it up or ask a smog station about aftermarket cats, since they would be a lot cheaper.

 

Has anyone bought an o2 extender for a TL ? Any particular brand or place you got it from ?

 

Thank you for all your advice

 

I found lots on ebay. I havent had to buy one yet. My p0420 comes every now and then.

 

Richie V6P high flow car if you don't have visuals inspection. They will pass the sniffer just fine. If you have visual inspection then try a junk yard for a lkq recycler