Applies to the following Mustangs:

If you have a 2006-2010 Mustang GT, you will need to purchase an OE Ford level sender for a 2007-2010 GT500 to fit on our pump assembly.  Match the year to your chassis.  (on a 2006 Mustang GT, purchase a 2007 GT500 level sender)

Please see this video for detail on the handling the level sender.