I bought these back in October but have decided not to install them and just keep my PLX gauges. They are brand new in box. I bought them from another seller. Asking $675 shipped.
It's a 3 set which includes the following:
6400 sensor module
6478 wideband AFR
6463 fuel pressure
Sorry, I'm only selling these as a set. Paypal is preferred. Only shipping to US please. These are high quality gauges!