Are you looking for a sensor for a wideband controller or are you just replacing a bad one on your car? Most o2 sensors are pretty much the same and have negligible differences, when comparing wideband to wideband and narrow to narrow.. If you're on a budget, just get a universal Bosch unit from AutoZone or Advance and wire it up yourself. Takes about 10 extra minutes and will save you about $100. It's super easy to do if you just take your time and read the instructions. Otherwise you can get a sensor that just clips in from hondaautomotiveparts or from the parts store for about 30-40 bucks less.
Like Preludedriver99 said, obd2 cars, 95 or 96, I can't remember on the Prelude, uses two sensors. The first one is before the cat and is what the engine uses to measure oxygen content of the engine to adjust the air/fuel ratio. The second sensor is after the cat and is only used to determine if the cat is working correctly. The two sensors are not interchangeable either.
