So I'm piecing together a Vortech setup for my Fox. I've got a bunch of stuff, and the two idler pulleys I have are different sizes. I have a 3", and a 3.5". I noticed on the Vortech site, the idler pulleys for the 86-93 and 94-95 are diff. part numbers. When I look up the part number on the Vortech site at Summit, it lists it as the 3.5". But from pictures I've seen of what others are using, they more resemble the 3" I have.