I wanted a holder for my Baofeng UV-5R two-way radio in my 1995 Jeep YJ. Since I already made an iPhone 6 holder (see http://www.thingiverse.com/thing:1148280), I figured why not just make an insert for that (assuming I don't need to hold both at once).
So here it is -- it slides in to the iPhone holder and the radio belt clip goes through the hole.
Assuming you have a Jeep YJ and an iPhone 6 and a Baofeng UV-5R then this is just the thing for you!
Or, if you just want to hold your radio and you don't want the iPhone holder, I don't see any reason why you couldn't just print this part and the dashboard grabber part from the iPhone holder and glue them together without the phone holder part.