Hey guys, I have a KA-powered '92 Hatch and I'm looking for a high-flow cat. Do these things help tremendously? I did a search and a lot of people made vague references to them, but no solid information. Is this CATCO the best High-Flow for NA?
http://store.summitracing.com/partde...57#largerimage
Also, there are two CATCO Nissan "Direct-Fit" converters on summit-racing, which is the right one?! Thanks ahead!
-Galen