Welcome to the site Jel. You might want to do an intro in that section and say hi.
We have a "how-to" on replacing the alternator with a Crane unit. You didn't state what year model you have so can't answer your question as they've changed over the years.
For the clutch everyone here seems to change the stock unit to a Bandit and there is a "how-to" on doing that also here.
We have you covered.
Welcome again,
Ray