will a 99+ civic si muffler fit a 98 civic ex

 

The axle back would most likely fit without a problem. However, just a muffler would have to be welded on.

Are you trying to fix a hole by replacing it or are you trying to go for performance gains?

 

i have a 98 civic ex and i have a stock cat back exhaust off a 200 civic si and im looking to get a si muffler for it. would it give me more hp? i just like the stock si chrome tip muffler. i dont want a fart can or anything. (nothing has been installed yet. still have 98 stock exhaust on it plus muffler)