Hey, time to fill up the boar yet again, I was wondering about the Catalitic Converter-looking thing on my exaust. I'm running a 1977 20R with a (soon not to be) stock exaust, and I was wondering if the big ol' hulky thing under my floor pans was a Cat. Or what (as I worked on hondas for a bit a learned to be called) a Resonator. It's got me the hell confused, It's big as hell like a Resonator and has the internals (or at least by apperance) of a Cat. If anyone could help me that would be great. Also, does anyone know what the sensor plugin is that's going into the Cat/Resonator/dohickey? I think it to be an O2 Sensor, but wanna make sure. Thanks everyone! :) -Craig Boots Montague, Pvt. USMC Poolee

That's a resonator. You can get rid of that thing - that's one of the first things that I got rid of!