With the Innovate, you don't need the gauge, you can see the A/F ratio on the display. BUT, I know that sometimes its nice to have a simple gauge and hide the box. You can either buy the LC-1 I think it is, which is just a gauge and sensor that doesn't do datalogging but its like half the price of the LM-1.

Or.....

What my favorite is, get the LM-1 which will datalog in the box without a laptop (I datalog A/F ratio, MAP, and air temp). The LM-1 has 2 fully programmable outputs. You can set one of the outputs to mimic a standard narrow band sensor. Then you get the Auto-Meter A/F gauge only (to match your other gauges) and wire that to the LM-1 output. So the LM-1 is tricking the gauge into thinking its a narrow band, but you're seeing the accurace of the wideband. All you have to do is tweak the output of the LM-1 so the middle light of the gauge is lit at your preferred A/F ratio.