Pulley?

I have a question for someone i have a 97 neon I was thinking about geting an under drive pulley for my car. I went to modern performance and just wanted to know which one is the best to buy for the neon. Either the MPx OR the Unorthodox one or is their another one out there. And with that is there any other kinds of modifications that i will have to do once i get it like take off the a/c, power steering. And go without them. Thanks for all the help!

From what I hear the eBay UPD's work just fine, but you will have to get your own belts. The MPx UDP comes with new belts.

And no you don't have to modify anything. Just take off the stock crank pulley and put the UDP on.