is there a cheap version of O2 sensor often used on dynos?

[BLINGMW]

What do you call the tailpipe probe they use on dynos to get the AFR? I'd like to put together a little wideband controller and sensor, but it's just not going to be useful unless I can just stick it in the exhaust exit. I guess if a cheap, small version doesn't exist, I was thinking of making something kind of like this with a heated sensor:

<!-- m --><a class="postlink" href="http://www.nightrider.com/biketech/diy_exhaust_probe.htm">http://www.nightrider.com/biketech/diy_ ... _probe.htm</a><!-- m -->

though it appears he completely blocked the exhaust with that thing... so some improvements come to mind. But even better, I'd just rather buy one if it's already out there.

[CaptainHenreh]

I seem to recall Peter D. using his O2 sensor UFO Style with some kind of clip. Inconsistent at idle, but at WOT pretty reliable.

[D_Eclipse9916]

Not cheap as you want, but im selling my wideband PLX setup.