Prothane endlink kits will replace your stock endlinks.
Your stock endlinks come with soft rubber bushings that do not firmly hold the ends of the front swaybar in place... under hard cornering conditions.
Some lowered Mustangs may actually benefit from going with shorter endlinks... to help correct the front end swaybar geometry, which is altered after lowering.
4-1/4 inch Length
Fits 1994 - 2004 Mustangs lowered more than 1-3/4 inch.