[65comet]

3.0 or 3.8 engine, as the 3.8 was also available on wagons that year? When you say "from the converter", you are saying you replaced the cat, and not just beyond the cat to the backend, right? Just want to be clear you have a new catalytic converter.
You didn't say how many miles, but I'd guess for a 93 it is a ton, right?
Any check engine lights on?
Does it start right away and easily, or does it take a lot of cranking and you might have to give it a little pedal also to start?