I'm with you there mate, but I'm not sure how accurate the standard sensors are? I know Nismo use to make replacement gauges that just pluged straight in, maybe you could find a set of those?... The boost gauge was piss easy, I just put the T piece on the vacume hose between the BOV and the intake plenum. The Oil pressure and Oil temp should be easy enough using a sandwich plate. A mate of mine is a auto electrician so I'll get him to hook up the wiring and volt gauge.