I grew up on C with a front mounted 2 row cultivator similar to this. The C had a much more comfortable seat than the CA. It was a 5” cushioned seat that stretched from one fender to the other, and had a nice backrest(to keep you from falling off the back of the tractor when you fell asleep during those monotonous hours while cultivating corn and soybeans).
Same here. Most of my tractors are two cylinder John Deere but I got an opportunity to buy an Allis Chalmers B from the farm behind me so I bought it. I like this channel too.