Thanks Chris!
I'm using Macally Magnetic Dashboard/Windshield Suction Cup Car Phone Mount Holder with Extendable Telescopic Arm for the tablet and Rugged Radios Jeep JK Grab Bar Mount and Single Side Radio Mount for RH-5R Handheld Radio for the radio!
A bit under $60 delivered to your door!
The tablet runs Gpx viewer, Jscan and Torque pro, so I have all the infos at will.