it uses a chain and yes its interference.

on an 05 (or any car under warranty), don't even mess with it. find a dealer you DO trust and have them do he work. if you mess with it, that just gives them grounds to not do the work under warranty.I did buy the car, seems to be pretty nice, however I did notice that the trans fluid was a little low. After adding 1.5 quarts I looked under the car and it does seem that the transmission has been leaking a little. Possibly from somewhere around the top of the transmission?? At least it's still under warranty. I'll try to look a little closer tomorrow - maybe I can fix it myself - I kind of have a trust issue with the Ford dealer in town.