I have for sale some Prosport Gauges. The boost gauge is a 30/30 gauge that has warning light and sound, the A/F Ratio gauge reads 10(rich)-20(lean) and also has warning light and sound, both the boost and A/F Ratio gauge has 3 colours they can change red, blue, and white. I also have their digital dual intercooler gauge that reads both inlet temp and outlet temp. I paid $531.00 plus shipping and customs fees which came to over $600.00 USD total for the gauges so I thing $400.00 is a fair price. I am also not willing to separate them at all so please don't bother asking.