I bought this brand new to tune my blown 68 mustang. It seriously has about 5 hours on it, and now that the car is tuned I really dont see the need for it anymore. Everything is in brand new condition. It is a great unit since it uses 2 o2 sensors in both banks, and you can log your a/f ratio on the unit itself instead of having to download it to a laptop like a lot of the other ones. I paid $440 for it and its basically brand new and i'm only asking $375.
http://www.fuelairspark.com/Products/details/meter/default.asp
http://www.fordmuscle.com/archives/2007/02/FAST/index.php
http://www.fuelairspark.com/Products/details/meter/default.asp
http://www.fordmuscle.com/archives/2007/02/FAST/index.php