rent or buy a cheap $20 electric impact gun. Thats what I used out on the street to install it 4 years ago. it's a 20mm socket. very easy to do and I have the proper belt sizes for ya too. or take it to a shop. they should charge 1-1.5 hour labor rate to do the job and 1.5 is on the gready side.
It is 2 lbs lighter then the stock pulley and it is slightly under driven. that means that it is easier for the car to accelorate and it improves throttle response and the engine doesn't have to work so hard which means better fuel econnomy when you don't put your foot in it.
I bought them but changed my mind about what I was going to do with the outside of the car. I have since sold the car. So this is a brand new set. not used. comes with new light bulbs too. $45 shipped.
This is for the FS-DE FS-DET AND FP-DE motors. (99-00 1.8L 2001-2003.5 2.0L and MSP) You will notice better throttle response, quickers revs, and better fuel econnomy. This was a great mod when I had it on. I put the stock one back on when I sold my car. You won't be disapointed...
I have a pair of left and right 2003.5 MSP rear brake calipers that I was going to use for my disc brake conversion. Both of my mazdas are now sold so I don't need them anymore. $140.00 shipped.