Disc brake conversion

Need help doing this, I have a 68 Barracuda that im changing over to disc brakes.
I need a parts list of all the stuff I will need. and some advice on how to do it. I know I can buy the kit but im working with a extream budget here so buying as I can will work best for now. Plus I can get the parts at jobber price.

Can I leave it manual brakes or will I have to go to power?

Thanks to all that help on this,
Billy