I bought these back in October 2010 but have decided not to install them and just keep my PLX gauges. They are brand new in box.
Selling these individually:
Auto-Meter 6400 Nexus Gauge Sensor Module: $200 + shipping
Auto-Meter 6463 Nexus Fuel Pressure Gauge: $220 + shipping
Auto-Meter-6478-Nexus Air-Fuel-Ratio Wideband Gauge: $330 + shipping
These are great gauges!