Ebay mate, where most people including myself have got one. I got a set of 3, boost, oil pressure and volts for £80. Not very difficult to fit, plumb it into your fuel regulator and just decide where you want to mount the gauge. I got a universal a pillar pod from ebay and moulded it onto my a pillar, others have fitted it behind a vent or moulded into the vent< depends what you like the look of.