Torsion bar seals?

Here is an option if you don't mind poly, they are way cheaper:

[ame="http://www.amazon.com/Prothane-4-1701-BL-Black-Torsion-Dust/dp/B00387OVQ6/ref=cm_cr_pr_product_top"]Prothane 4-1701-BL Black Torsion Bar Dust Boot Kit : Amazon.com : Automotive[/ame]