2001 Expedition 4.6L Auto- Any recommendations on an SUV shift kit for my Exp. I just want to upgrade to something with a better and more positiveshift than the stock kit. Any recommendations of where to purchase too. Thanks

Not sure where to purchase one, but I have had transgo shift kits in 2 of my past vehicles. My 94 Mustang GT and a 96 F150. They say you can do them yourself however I had an auto tech do both of mine. They worked great, very quick firm shifts but not to harsh. I bought mine from a company called excessive motorpsorts but I thnk they have gone belly up. Do a search for transgo shift kits and I am sure you will easily find one somewhere.

http://www.transgoperformance.com/forde4od.htm
here is a link to their website.

Sorry, this should be the link for your expedition.
http://www.transgoperformance.com/fordaode.htm