help with a NH 66 and super 66 baler

[markcarey06]

Im hoping I can get some help. I bought a 66 NH baler for scrap price at a sale hoping it would get me off the ground a couple years ago as I was just starting out and wouldnt you know I took it to the field and put 1000 bales through it without skipping a beat. Now I also have a super 66 that I have ressurected from my neighbors barn and Im wondering what the difference is between the 66 and the super 66. Thanks