Ahh, memories!
Ft. Benning, GA, 1964: someone showed-up with a rough one - no top deck other than a rough-shaped plank....overall grey finish, K&B .35 power. Asked me to fly it.
Pleasantly surprised at how well it handled - especially the Squares. Thing turned on a dime.
It was ugly, but a pleasure to fly.
Not long after, we were enroute to Vietnam and I never saw it again.