953B interchangeable parts?

[coondog13]

i purchased my first piece of equipment other than tractors. 953b 5mk don't remember the rest and it's not at my house. It'll be for farm use not a company. It was traded in by company that bought it new from cat here so stayed here local. They didn't think it'd been worked extremely hard. I think it was maintained pretty good and it's got cat filters on it I noticed. I had a friend that use to own a 53 and still owns new dozers go run it in their back dirt lot and it thought it seemed strong and fast. Anyways to my question I will need some track pads soon and was wondering if 953's fit it or even 943's. Mine are 20". I have a friend with a old 943 been sitting and the pads aren't horrible on it and hey looked the same but I didn't have a tape to get dimensions but thought it also might have less pads than my 53 I forgot to count them. But if 953 fits the 53b I can atleast look for dismantles for when I need them since there was a lot more of them. I also need teeth and shanks and that 943 has them surely they aren't different are they? I know it's got 8 and that's what I need. Thanks