I mean if you make a replacement, gauge replacement for RPM and MPH you could do quiet a few things.. Like use one entire side for sensors, or hell do something like fuel econemy, Navigation, and etc. The only thing you really need from the gauge cluster to keep it legal is the odometer. Everything else is pointless as you can display everything else on the screens. This would be great for those who have maybe consult, or maybe a AEM and etc. I would be willing to pay upto 1k or more for a fuel gauge replacement. For functionally it I would add a small 4 way joystick that can be attached to the steering wheel console.