Didn't buy one, but a friend lets me borrow his Ls1m WB when ever.
I screw it into the pipe where the u-bend once was, and zip tie the wires up under the car, I then run the wire through the fender, into the door jam and on into the cars interior. I use the read out that was supplied with the kit, and then a laptop hooked up with my Power Tuner running when were tuning.
I was having a lean condition at WOT and everyone said, well its your fuel pump, buy a new one, and then scan with a WB. We were scanning with a narrow band and was giving us a pretty god reading of the lean mixture, adding in the WB only confirmed that.
Turned out everyone was wrong...fuel pump was fine, MORE than fine as the gauge was reading 60 PSI the while time never dropping, but they kept saying it was. Turned out it was the PE mode in the computer program, instead of adding fuel, it was taking it away on purpose. Guess we forgot to add the little - in front of all of the numbers.
~F~
