My new 1969 dodge dart

Gvader,
Welcome. There is a lot to learn from this site. As Idaho said, the search engine is your friend. There are disc brake setups that use factory parts and many aftermarket kits too. Do some research so you get what you want. As for axles, you can redrill the axles and drums or buy replacements. These are some of the things I learned here. All he questions you asked have been discussed. Stick around and you'll be a pro in no time.