This is a project I undertook about 3 years ago, but am willing to post to give other members ideas on what can be done,
Apart from the speed sensor all wiring to the vehicle was done through the original plug, The center warning light panel was retained, and had a metal plate overlaid to mount the new gauges to,
The Speedometer and Tachometer are 100mm Gauges, with the oil and temp 52mm gauges, there was no fuel mounted as the customer already had a separate LPG gauge elsewhere in the vehicle.