so i found an older (unused) glowshift a/f gauge for 2 bucks at the flea market the other day so i couldnt say no to that! only it didnt come with an 02 sensor. its an older one with 3 wires, am i good with a simple universal o2 sensor like this http://www.ecstuning.com/ES1936798/ or do i need something more? also is it even worth my time putting this in? not sure how accurate the older 3 wire ones are, sticker on the back says 2007 so im guessing thats when it was made