I have a 93 mustang gt 5 spd...I was going to get underdrive pulleys..And I was going to get a electric fan and a throttle body..i was wondering how much hp i will gain..And what are the best underdrive pulleys' to get..thanks

 

I hear march and steeda are supposedly the best. I'm running steeda and theys great!

 

The electric fan won't do much and neither will the TB without anything else. The pulleys will give you the best boost out of those and it should be 10-15 from what everyone has been saying.