I have a couple questions about upgrading pullies. I have a 95 5 speed SC. What is an underdrive pulley kit and what does it do for the car power wise. I see that SCP sells them. I have also heard about people with 94/95 SC's putting on 89-93 SC pulley. What does this do. Is this a nice upgrade and can you feel it. If I replace them do I have to do anything else to the car. I am upgrading my exhaust at some point. Thanks.
-Tony
-Tony