ok i bought the car"93" and it came with underive pullies. My question is how do i tell which one goes where and will i need a new belt if so is it the same size belt.?ANy tips?

 

The crank pulley will be the deep, smaller diameter of the 2 larger pulleys. The other will be the water pump and leave the alt off. The charging system is already gonna take a hit from the others being installed. Yes, you will need a new belt. Note the pic for comparison

 

I didnt need a new belt on my car.
I used the same belt with the underdrives on the crank and waterpump and the stock pulley on the alternator (3g but used the original fox alternator). Ive also got a smog pump eliminator pulley.

 

Interesting. I had to put a smaller one on my wifes car after installing the pulleys.

 

well thats good to know how do i know what size to get?

 

Trial and error or take a string and route it as if it the belt and then measure the lenght of the string.