how many catalytic converters are on a 96 lincoln continental?

[CarIlliterate]

I have been told I need a new cat and o2 sensors on my 96 continental. How much does each cost and which is more important to replace 1st. I also need my spark plugs and wires replaced.

 

[jhon]

all cause u cant tell if one is worse than the other if i were u id get a new car that way to much moneybeing put in consodering what its worth