Looking at 1st modification on 01gt

[Nooky Booky]

I'm looking to do my first modification to my 01 GT. I'm going to do a K&N filter kit and a Steeda under drive pulley. I can only do one right now and my question is which do you think I should do first? By the way if your doing a under drive pulley kit you need to know that Ford changed the design of the water pump mid-way though the 2001 prodution year on the 4.6L. The 96-mid 2001 GT has a bowed outward face on the water pump pulley and the January and after has a depressed face on the pulley.(They shortened the water pump shaft)This requires a different pulley than the one used on kits prior to the change. As of now there is not a kit availible from Steeda for the newer models. They are working on it.