Yeah the Poewr Meter i-D, just taps into the ecu rev wire i think(cant remember which one, its green and yellow on my car)
And it tells you the power you are making, you can also callibrate the speedo on it, and it will show: speed, power and can make diferent graphs and readings out of them, it also does 0-400m timer and pieces together a dyno graph by the way of your driving, you can also set warnings for speed and power.
But it seems my Power Meter has run into some problems today, it is randomly sounding warnings and showing random power and speed outputs from time to time. I'm thinking its a loose wire. So if i can get it working, i'll still be interested in the SBC.
i think the going rate for a single Blitz i-D SBC is around $350-500, depending on color and if its Spec R or Spec S