Machan both meteres are exact size .In fact all eg8,eg6,ejs came with similar gauge cluster with different type of dials.all the connector locations are identical and some have additional connectors for cruse control,gauge dimmer wiring,etc. Most probably your one too have rpm wiring. Even my wire harness have additional wire connector,probably for some higher spec model. Go through civic-eg.com, DIY section and you would be able to find more about conversion. If you are lucky enough, this may be just plug and play!