Dad bought a 1086 in 1990 to replace our 1466 with cozy cab and no A/C. I remember it as a huge upgrade in comfort and equal or close to equal power. He had it until he retired in 2000. It was a really good tractor for him.
I had no idea Big Bud made an air cooled tractor. The Deutz BF 12 L 513 C was an interesting choice for some farmer... I wonder if it's been repowered or is still in service?
We had a 19ft IH 230 swather back in the 80s and early 90s. It was a decent machine, also ran a 75 pull type. Dad and I always wanted a 4000 but eventually stopped producing small grains.