How much cost will I be looking at to have a Catletec converter put on? on 2003 Pontiac Grand Am

car has no power and exchust very loud service engine soon ligt on also trac light

cat. conv. $150.00-$200.00 depending on style, manufacturer, and supplier. labour aprox. 1 2/ hrs. per. rate will depend on shop.
thanks....but are you typing 12 hrs for labour or half hour????
1.5 hrs sry