For using the O-2A as a civilian there would be a LOT of work if not impossible. The B model (called the bullshit bomber) was an off the shelf 337 with a large amplifier and speaker that was at the rear where the cargo door was. Used for psy-ops It lacked all the windows. There were only 2 seats in the aircraft, and both were either armor plated or military that accommodated a seat pack chute. The seat rails were there but no seats. OH.. and important... the A models had basically a pair of metal clad 2x4's on the belly so one could land wheels up with no damage.... and it worked as the Dr. who bought my plane had to do just that once. No spinners on the props either. There were windows on the door, and the overhead, and the instrument panel was all military and not even close to the civil version. In the rear right was a rather large radio rack on the left that took up a lot of space, and if it were a late 68-69 model there was a wonderful large bubble window that allowed the pilot to look down. And don't forget the 4 hard points and shackles for the Willie Petes. I kept my 1969 for a long time, but always enjoyed the Birddog as my pick of the litter. Way more fun. By the way, even though the Birddog was based on the Cessna 170, it had a tapered tandem cabin so the pilot could look down either side, but the O2 had to have extensive mods to accomplish this feature on the left side only. The door windows allowed for a view, but only with a bank turn. I hope they give us the bubble version, it's the least like the 337.