Not so fast. You need to appreciate the size of the 800 series Sno-Cats. Here are three grousers; top is pattern for the 800, middle is the heavy duty 700 (1 1/4 roller), bottom 400.
The other photo is of the pattern for the hub extension for a 800 compared with one for a 400.
Roller diameter for the 800 was about five inches. Grouser length 32 inches.
Me: Hello my name is Scott and I am a Tucker-oholic.
Them: Hello Scott.
Me: I have not greased a roller in three months.
Them: Very good, keep it up.