u/One-Ship3948

Any thoughts on what I should be looking for? It was my mom's, and has 147,000 miles. She says the main issues she's having are the catalytic converter is bad (or o2 sensors...) and of course she had the TIPM issue a few years back and did some sort of bypass on it to make it run. Otherwise she says it's a strong runner and doesn't have any other issues. Also, does anyone have any experience with the Infinity Gold sound system? Is it worth anything or should I take it out and install my own? Ice heard they sound okay, but I'm a little picky about my sound quality. Thanks for reading and any feedback!