some don't even have the same knobs... just ads to the character of the Beaver.
Some of the earlies had coloured knobs, the AG one's were a fair mix of machinery with stuff straight from the factory and others from lotsa other places including ex military stuff. After a few years they had all sorts of parts with a few having U-6 wings with hard points. Most of the tip tanks were U-6 stuff. I think all the quadrants were converted in hangar 17 at Bankstown to be the same.