02 Sensors: Cheap source for replacement?

[pfb]

'94 V8i, 97K miles, original 02 sensors.

I'm getting crappy mileage (~10MPG), have reduced power, and the tailpipe is sooty. I'm thinking it's time to replace the sensors.

I know I've seen sources for cheap replacements, soldering on the OEM connectors isn't a problem if it saves some $$$, but I can't locate the source.

Anybody point me to a cheap source for compatible sensors?

And how many sensors do I need?

 

[roverX]

I believe you have only 2 sensors. You can do a search on Dweb for an alternative. I know there are some Toyota ones that you can use but I can't remember which ones they are! If I find it, I will repost. If you find it, please post!