No. I wouldn't recommend it at all.
Its there for a factor of federal law.
Now, if you have done an analysis of the flow and think its a problem, then replace it with a hi-flow one. When I had my turbo muffler and rear tail replaced, I also added a hi-flow cat. It was cheap. In reviewing the old cat, it wasn't too bad at all. Some of the cones were blocked but didn't do anything for the performance according to the exhaust guy.
It's still a poor hp/tq 4cyl pushing 3600# square truck around.