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Yes.
No, that will not work. A restricted catalytic converter will need replaced.
There's no possible way to pass inspection with a bad catalytic converter, if if you find out you have a bad catalytic converter during your inspection you have a chance after you after you have replaced the catalytic converter and the inspection no no charge/free!!
If it came from the factory with a catalytic converter then it must have one
Actually it probably wasn't customised. That is how they were made. The two sides go together right at the cat converter. There is a four bolt flange at the interface between the crossover pipes and the cat.
they are usually bolted on in the front of the converter.
Catback is shortened slang for "everything back from the catalytic converter". It is a bolt on exhaust which connects to the rear of the pipe holding the catalytic converter, and ends with the muffler and exhaust tip. In short, you need a cat to have a catback.
To pass emissions you do.
If it came from the factory with a converter then it needs a converter.
Yes, legally and for the computer to function correctly you will need a catalytic converter.
Yes, it is illegal to operate any vehicle that came equipped with a catalytic converter from the factory with it removed.
No. you'll need to get a replacement.