If the converter is defective there is no alternative. You must replace it.
No
My only guess would be to chop them out and weld in the new ones.
Catalytic converters are very expensive. For this reason only replace the catalytic converter if it is defective. If only one of the two are defective replace that one.
catalytic converters are located near the muffler.very difficult to replace
According to Meineke, they are asking $1,300 to replace the two converters.
No, you do not.
replace sensor,catalytic converters smell like rotten eggs when going bad
Remove both converters, install the new ones. Don't forget the "donut" gaskets.
Catalytic converters are in the exhaust system so replacing them is a job similar to replacing a muffler. Difference is that the converters are bolted in and have gaskets that must be replaced at the same time.
It will not work better if it is hot or cold if it is clogged. Replace it.
unless your a better than average mech. take it to a muff. shop. you can buy aftermarket converters from online catalogs and have them installed.
No, it is illegal to alter the emissions system on any vehicle.