The stock bushings had fallen completely apart. After ordering the first set of bushing from daystar on amazon, they were too small for the mounting holes. The set next set came from energy suspension, i installed them and when a week they started squeaking bad. What to do next to stop the squeak, i decided to cover bushings with some grease. It's a big pain to remove bushing, have to remove back seat. I used a grease needle on my grease gun, inserted needle into the bushing { to my surprise was very easy} and pumped until grease came out the edges. Stopped the squeak. Done!!!!

 

Most of the aftermarket stuff is a stiffer material. OEM are rubber and much better to fight noise.

 

The stock parts cost at local ford dealer is $558.00 vs $ 154.00 at Amazon.