http://www.maperformance.com/store/product.php?productid=17263&cat=299&page=1
After watching some videos of these gauges in use on you-tube, I'm having second thoughts because they just flash led's back and forth and the digital readout is going all over the place... rarely settles down and thats annoying to me. Just looks like a silly light show in some of the videos.
Maybe the Innovate LM-1 is the best way to go and then remove it when the AFR is correct.