Hotchkiss or Helwig rear sway bar?

The Hotchkis rear sway bar is tubular (hollow), so larger diameter but lighter. It's also adjustable, with 3 different levels of stiffness. The Hellwig bars are solid and non-adjustable.

Not saying that you need either of those features, but the Hotchkis bars do offer them. They've done a ton of research on what works on these cars as a package. You can usually get them much cheaper than the MSRP listed on their site as well. Folks have had luck in the past calling Hotchkis and having them beat other listed prices (like Summit), which are usually much lower.