water pump pulley

its an aluminum water pump...... but yeah im going to cal my (local?) pick-a-part and see if they have anything out there that will help me out...... now why would i need the new crank pulley for it to all line up i figured if i can get the water pump pulley it will line up seeing as how i have 3 slots to choose from on the crank and 2 on the alternator...... but yeah thans for the advice i will go and look for those now..... will post pics of refinished engine as soon as i get it back into the car..... thanks again guys

Toby