I fabricated a plate to mount my gauges, I have 2 2/58 mechanical, oil and temp on the top row and 2 1/8 guages for the non critical gas and volts on the bottom row. I put slots in the plates so I could slide the SS oil tube and wire for the temp through to make it easy on my. I had been using the stock gauge pod adapted to install the gauges but that was just supposed to be temporary and it broke with working on the car to do some wiring in the dash. I'm still using the stock fascia with the lips for the stock gauges removed. The trick to put the guages in with the panel the guages have to match the holes in the fascia and need to be tight against the fascia when it installed. I installed some blocks to fasten the panel in and the blocks give me side to side adjustment, I have slotted holes in the panel to give me up and down adjustment and I have allowed a bit of room so I can shim the panel so the gauges are tight against the fascia...I ran the GP for a while and it is begging me to get it on the road.... 
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