Hello! I have a 1989 Celica GT-S liftback that desperately needs the catalytic converter replaced. Essentially I'm looking for a reasonably priced cat online that is a simple bolt on and requires no welding. Only question is, I want to make sure I'm ordering one that fits properly as I have seen them range in price online from $40 to close to $500. As I am a college student and there are definitely more things that need to be fixed, I was hoping for some good suggestions on a good priced cat online. My second question is that I've seen two very different looking converters that say they both fit the '89 GT-S. Just for the sake of an example, what is the difference between cats like this: http://www.carparts.com/details/Toy...rneast703161&gclid=CPj36cac6bUCFe9aMgodrQYACA and this: http://www.carid.com/1989-toyota-ce...&cagpspn=pla&gclid=CJvm_9mc6bUCFYpDMgod5lAAnQ Thank you and all suggestions are welcome!