warranty and pulleys

if the part you replace meses up something then your warranty on what it messed up of if it its self messes up is voided. even though that is the law some ford places are ass holes and will not do the work even though they have to by law. they will probably not notice a pulley they never did mine.
 
Keep your origional stuff. That's the first rule of doing any mods. there's some dealerships who can't but will deny service if you've made any slight modifications. By law, they have to prove to you that your mod caused the problem. I still have all my stock parts...however I have a third set of cats that aren't being used if anyone wants them (off of a 2001).