If you go with a dash insert consider the Speedhut gauges. Their fuel gauge is programmable so it works with any sender.
For my truck I bought New Vintage gauges which wasn't compatible with my 0-90 ohm sender in my S10 tank. I wanted to used the sender/fuel pump assembly for the gauge in the tank so I had to pay New Vintage to convert the gauge.
http://www.speedhut.com/?_vsrefdom=a...FZO4wAodVqcBRQ