The tank on a 06 has the cut-out for the sending-unit, it's just not cut-out.....There's several kits out there. Do some searches for "Rhino Fuel tank Sender", you'll find one. You could also buy an 07 sender.
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Went back in time....07 Rhino 660....
2016 Polaris General???? Or 2016 Pioneer 1000-3EPS??
2014 Kawasaki Teryx T2 SOLD
2013 Ranger XP-900 aka "Big-Green Tractor" SOLD
2010 Ranger XP-800 aka "Whitey" SOLD
2009 RZR-S SOLD
2007 Rhino 686 SOLD
2007 Rhino 450 SOLD
Blue-Cooler/White-Top member
SSXSR Member # 6
PIG FEEDER NATION