IMHO, would strongly recommend requesting enough material to sleeve both "top and bottom of the front springs"...that was/is "the fix" for me.
I created a thread for this very issue on my experience with same. The sleeving material is a high quality synthetic/nylon based material and resists abrasion to affectively do it's job of quieting the squaeks made form the interface of the spring and upper and lower shock mounts/perches. If you've got it, a light coating of white grease on the bottom of the contact surface of sleeves while you're in there wouldn't hurt too, but not necessary.
I created a thread for this very issue on my experience with same. The sleeving material is a high quality synthetic/nylon based material and resists abrasion to affectively do it's job of quieting the squaeks made form the interface of the spring and upper and lower shock mounts/perches. If you've got it, a light coating of white grease on the bottom of the contact surface of sleeves while you're in there wouldn't hurt too, but not necessary.