I had the ISSpro gauges mounted above the rear view mirror in my '03, which are going in my '06 this week since it has warmed up. I'm always glancing at the mirror anyway, so it made sense to mount them there. If you go that route w/ISSpro gauges, make sure you get the cable extensions for the pyro and tranny gauges. These have a control box between the thermalcouple / sending unit and the gauge itself and the cable that goes between the box and gauge is not long enough to mount above the mirror.