I was very glad that it actually fit. The 1998 and 1999 Eclipses have a different cat from the other years. It is hard to find since it is curved. This cat actually did fit direct fit as advertised. It did need to be bent a little as it was touching my oil pan, and the O2 sensor and bolt tab were on the wrong side, but it all still worked well enough. My car was able to pass emissions, and it seems to be functioning well. I am interested to see how long it will last. But for now, I am just happy that it actually fits. I tried multiple places and had to send back parts that were not as described that did not fit.
Posted by Esther M (Phoenix, AZ) / March 19, 20181999 Mitsubishi Eclipse