Hi I have connected a air/fuel ratio meter on my carbureted Evo Heritage. Have the gauge mounted. Looking at standard wide band sensors...are too big for my 2 into 1 exhaust. I found 1 online. It's a "Delphi mini-switching O2 sensor", for small engines. I need a "wide-band" sensor. I can't seem to find any stores selling these small ones. Anyone have any insight as to where they are available? I would also need the bolt-on flange & gasket. I've looked at Summit,& Jegs online. Thank you!