without sounding snotty, if you're asking a question like that, the job don't get done by you, unless you rent the tools. would you know how to use them if you rented them?
why do you want to rebuild it? bec after all is said and done, rental/time/mistakes, it'd be easier to buy a rebuilt. that is, unless you want to ride the bleeding bark of the tree of knowledge in order to be proud of what you MIGHT accomplish.....
i do it all the time, bec i'm into pain, but i wouldn't recommend it