you probably need a pullie puller I have never done it, but im sure I could get it done in about an hour.. you will need to tention the belt to get the smaller belt on..
a. harmonic balancer puller (you can rent of buy from Autozone for like $15)
b. black rtv gasket maker
c. air compressor/air wrench to get the pulley off the altenator (if you don't have an air compressor, auto zone will take it off for you for free).
d. bolt starter for the crank bolt (comes with pullies from steeda).
Other than that, you just need basic hand tools. It is not hard at all.
Oh, you DO NOT need a different belt as stated by WRXracer. You reuse the stock belt.
u need the tools listed above..and u made need a pry bar/breaker bar cuz the crank pulley sux...some people wd 40 others heat it up...it's tough to take off but it can be done with smart planning...it was tough for me..cuz i tried to muscle it off..wd40 or buy some more potent stuff at autozone and let it sit..then u can take it off
take out whole alternator to autozone and have them install the new one for free.
Rent out harmonic balancer for $15,
install the pullies,
put EVERYTHING back together,
go back to autozone and get your $15 back and you're set