IDP
Regarding parts for your 1600 I would not worry about it most stuff should be available through Ford. If not you can start contacting salvage yards for compact tractors
Sounds like you are a new tractor owner ,just relax run the tractor and you will find out that these things don't really break alot. Change oil and fuel filter once a year and you should be a veteran in no time flat.
Just remember you have a small tractor not a bull dozer.Take your time work slow it's a heck of a lot better than a shovel and wheel barrow
Good luck
Bartman